Chapter 6: Health Maintenance & Screening

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Welcome back to the Deep Dive.

Today we're doing something a little different.

Usually we're talking about how to fix things, how to diagnose the rare disease, how to manage the crisis, you

but today we're flipping the script.

We're talking about the part of medicine that, if done correctly, ensures the emergency room never sees the patient in the first place.

Which is arguably a much harder magic trick to pull off.

It is.

It really is.

It's the shift from being a mechanic, you know, something's clunking, replace the part, to being, well, more like a gardener.

It's about maintenance.

Tending to the soil before the weeds even appear.

Exactly.

We are diving into chapter of Beat's Guide to Physical Examination and History -Taking, specifically focusing on health maintenance and screening.

And before you roll your eyes and think boring checkups, let me tell you, this is where the actual life -saving happens.

It really is.

If you look at the data over the last 50 years, we've seen this massive, I mean, tremendous decline in deaths from things like stroke, coronary heart disease, and cervical cancer.

And that isn't because we got better at surgery, though we did, of course.

It's primarily because we got better at prevention.

We stopped the disease before it became a catastrophe.

But here's the rub, and this is what we're going to unpack today.

Shifting that mindset is incredibly difficult.

Most medical students, and honestly most humans, are wired for the immediate problem.

My knee hurts, fix it.

The here and now.

Yes.

But today we're asking you to step into the role of a clinician who looks at a perfectly healthy -looking 30 -year -old and sees the potential heart attack at 50 and then actually does something about it.

Right.

And to do that, you need a very specific toolkit.

It's not something you can just wing.

You can't just lecture people.

That definitely doesn't work.

No.

You need to understand the evidence.

What tests actually work versus what tests just generate noise and anxiety.

You need to understand the psychology of behavior change, because telling someone to eat better is about as effective as telling the tide not to come in.

Right.

And you need to know the guidelines cold.

So that's our mission today.

We are going to break down the science of screening, the art of counseling, and then we are going to go through the specific adult guidelines from the sometimes uncomfortable conversations about substance use and violence to the real nitty -gritty of immunizations.

And we should probably start by laying the ground rules, because prevention is a big fuzzy word that gets thrown around a lot.

It is.

So let's sharpen it.

The text distinguishes between primary and secondary prevention.

I feel like these get used interchangeably in casual conversation, but clinically they are very, very distinct.

Oh, completely distinct.

And you have to know the difference.

Primary prevention is its true prevention.

It is an intervention designed to stop a disease from ever establishing itself.

So this is your classic immunization.

You give the shot, the immune system revs up, and the measles virus just bounces off the shield.

The disease never even gets a foothold.

Exactly.

Or counseling a young adult on diet and exercise so that the plaque never builds up in the arteries to begin with.

You are changing the future trajectory.

You're preventing the problem from ever existing.

Okay.

So primary is deflect the arrow.

What is secondary prevention?

Secondary prevention is find the arrow that's already stuck in there, but hasn't started hurting yet.

I like that analogy.

It's screening.

You are looking for an asymptomatic disease or disease process early enough that treating it actually changes the outcome for the better.

The asymptomatic part is absolutely key here, right?

Because if they have symptoms, it's not screening anymore.

No, it's not.

It's diagnosis.

Precisely.

If a woman comes in with a lump in her breast, a mammogram is a diagnostic test, full stop.

If she feels totally fine and comes in for her annual check, the mammogram is a screening test.

That's secondary prevention.

The goal is to catch it when it is small, contained,

and arguably more treatable.

And wrapping around all of this is a concept the text cites from the World Health Organization, the Ottawa Charter, sort of the philosophical underpinning of all this.

Yes.

And it's a really important anchor.

It defines health promotion as the process of enabling people to increase control over and to improve their health.

Enabling people.

I love that.

It moves away from the old

paternalistic doctor knows best model.

It's more like the doctor gives you the tools and the knowledge.

But this leads us to the first major hurdle.

If we are going to enable people, we'd better be absolutely sure the advice we're giving is actually solid because, let's be honest, medical advice flips flops all the time in the media.

Oh, constantly.

One day eggs of the devil, the next day there is superfood.

Exactly.

That is precisely why we can't rely on headlines or even just expert opinion.

We need a rigorous evidence -based system.

And in the U .S., the heavyweight champion of this is the U .S.

PSTF.

The U .S.

Preventive Services Task Force.

Say that five times fast.

Oh, right.

But you need to know them.

They are an independent panel of experts in primary care and prevention.

They don't just sit around and guess what might work.

They conduct these incredibly thorough systematic reviews of all the available evidence, specifically looking at the benefits versus the harms of any prevented service.

And then, based on that, they assign a grade.

And for anyone in clinical training, you have to speak this language.

These grades aren't just suggestions.

They dictate standards of care.

They even influence insurance coverage.

So let's really break down the grading system found in box six one of the guidelines.

Okay, let's do it.

Let's start with the do it grades, the straightforward ones, grade A and grade B.

These are the easy ones, the no brainers.

Pretty much.

Grade A means there is high certainty that the net benefit is substantial.

It works and it works well.

Grade B means there is high certainty the benefit is moderate or maybe moderate certainty the benefit is substantial.

So a little less of a slam dunk than grade A, but still clearly beneficial.

Exactly.

And in both cases, the action for you as a clinician is clear.

Offer or provide this service.

So things like colon cancer screening, chicken blood pressure, HIV screening in certain groups, these all live here in A or B territory.

They do.

And if you aren't offering these services to eligible patients, you are, frankly, not practicing modern evidence based medicine.

Okay, so A and B are go.

Now let's slide down to grade C.

This is where it gets murky.

This is where clinical judgment really, really kicks in.

Grade C means the task force recommends selectively offering the service.

The net benefit is likely to be small.

So this isn't a no, but it's definitely not a universal yes for every single person who walks in the door.

Exactly.

It depends on the individual patient.

Maybe they have a specific preference or a particular family history or some other context that tips the scale for them personally.

But you don't offer it to everyone blindly.

It's a conversation.

A true shared decision making moment.

That's the perfect way to put it.

Then we have grade D for don't.

Basically.

Grade D means the task force recommends against the service.

There is moderate or high certainty that the service has no net benefit or, and this is the critical part, that the harms actually outweigh the benefits.

I think this is so hard for patients to understand.

Sometimes they think more testing is always better.

You know, just scan my whole body, doc.

What could it hurt?

Right.

The more is more mentality.

So why would we ever discourage a test?

Because tests have real consequences.

False positives lead to a mountain of anxiety, more invasive tests, unnecessary biopsies.

Some tests carry physical risks like radiation from a CT scan or the risk of perforation during a colonoscopy.

So there's a real downside.

A very real downside.

And if the likelihood of the test helping you is basically lyro, but the likelihood of it hurting you is non -zero, the responsible ethical move is to strongly advise against it.

Okay.

And finally, the most frustrating grade of

I4 insufficient.

This is the gray zone.

This doesn't mean it doesn't work.

It just means we don't know.

The evidence is lacking.

It's poor quality or it's conflicting.

The jury is still out.

Which puts the clinician in a really tough spot.

If a patient comes in asking for a grade I service they read about online, what do you do?

You have to be completely transparent.

You have to be humble.

You explain, look, we just don't have enough good science to prove this helps.

And we don't know for sure if it's safe.

You share the decision making, but you have to clarify that science hasn't ruled it out yet.

You're operating an uncertainty.

It's humbling really.

It just shows how much of medicine is still in that figuring it out phase.

Absolutely.

The text also mentions the grade process, all caps grading of recommendations,

assessment, development, and evaluation.

How is that different from the USPSTF grades we just talked about?

It's a related framework.

A lot of organizations use it.

The key insight from grade, the really brilliant part, is that it formally separates the quality of the evidence from the strength of the recommendation.

Walk me through that.

That sounds like jargon, but I feel like it's important.

It's super important.

So you could have really high quality evidence, multiple, huge,

well done, randomized controlled trials that all show a treatment has a tiny, almost meaningless benefit.

Okay.

So in that case you'd say high quality evidence, but a weak recommendation to use it.

The science is solid, but the effect is miniscule.

Got it.

And the other way around.

Conversely, you might have what we call low quality evidence, maybe just observational data, no big trials, but the benefit is so massive and obvious.

You give it a strong recommendation.

The classic example is using a parachute when jumping out of a plane.

Right.

There's never been a randomized controlled trial of parachutes versus no parachutes.

There never will be.

Yeah.

But the recommendation is strong based on logic and observation.

So grade allows for that nuance.

It's about pragmatism.

That makes so much sense.

Now I want to pivot to something that I think blows people's minds when they first learn about it.

We kind of hinted at it with grade D, the idea that screening itself, the very act of looking for disease can actually be biased.

Oh, the biases of screening.

Yes.

Yeah.

This is fascinating stuff.

And it explains exactly why we need those big expensive randomized trials and can't just rely on simpler observational data.

Right.

We can't just look at a group of people who got screened versus a group of people who didn't and see who lived longer because the deck is stacked from the beginning.

It really is.

The text in box six five lists three major biases.

Let's tackle them one by one.

First up selection bias.

This is also known as the healthy volunteer effect.

Just think for a second about who signs up for a voluntary screening program or a health study.

Who are those people?

It's the person who already jogs, eats kale, reads health blogs and worries about their health.

They're proactive.

Exactly.

And the person who doesn't come in might be marginalized, have less access to care, work two jobs or engage in riskier behaviors.

So if the screen group lives longer, it might have nothing to do with the screening test itself.

They were just healthier people to begin with.

Precisely.

The screening test ends up taking the credit for all the hard work the kale was doing.

Huh.

OK, that's a clear one.

The second one, though, this is the real brain twister.

Lead time bias.

OK, this one creates the illusion of better survival without actually changing the outcome one bit.

So let's imagine two people, person A and person B, both have a disease that is unfortunately destined to kill them at age 60.

The outcome is fixed.

OK, Grim, but I'm with you.

Person A doesn't get screened.

They go about their life.

They develop symptoms at age 59.

They get diagnosed and then they die at age 60.

So from their diagnosis, their survival time was one year.

Got it.

One year.

Now, person B.

Person B is a diligent patient and gets screened at age 55.

The screening test finds the disease five years earlier.

They start treatment.

They live with the disease from age 55 to age 60 when they also die.

But wait, they still died at 60 the exact same time as person A.

Correct.

The screening didn't add a single day to their life.

It just added four years to the time they knew they were dying.

But if you're a researcher just looking at the data, what do you see?

Person A survived one year post diagnosis.

Person B survived five years post diagnosis.

It looks like screening improved survival by 400 percent.

And that is it's a terrifyingly deceptive illusion.

It's like resetting the stopwatch earlier in the race, but the finish line hasn't moved an inch.

Wow.

And that is why for screening trials, we have to look at all cause mortality rates, the actual death rate in the whole group, not just survival time from diagnosis.

Okay.

So that's lead time bias.

What about the third one?

Length time bias.

Think of this as the turtle and rabbit problem.

Cancers, or any disease really, aren't all the same.

Some are very slow growing, very indolent.

They're the turtles.

Others are incredibly aggressive and fast growing.

They're the rabbits.

Turtles and rabbits.

Got it.

Now, screening happens at intervals, say a mammogram once every year or two.

That annual screening is like a net you cast into the water.

The slow growing turtles are swimming around in the body for a long, long time.

So you are very likely to eventually catch one in your net.

Makes sense.

They're easy targets.

But the rabbits,

the aggressive, fast growing tumors, they might appear grow to a significant size and cause symptoms in the months between your screenings.

They pop up and get diagnosed because the patient feels a lump, not because of the scheduled screening.

So the screening test preferentially finds the less dangerous ones.

It disproportionately catches the slow, indolent ones.

The ones that, in some cases, might not have ever caused a problem or killed the patient anyway.

So again, if you just look at the group of screen detected cancers, it looks like they have fantastic survival rates.

Because you've selected for the easy cancers.

You've selected for the turtles while the dangerous rabbits get diagnosed clinically and aren't counted in this screen detected group.

It's another statistical trap.

It really, really drives home why we have to be so rigorous with these guidelines.

We aren't just looking for things.

We have to be absolutely sure that finding them early actually helps more than it hurts.

And that leads us perfectly to the next practical side of this.

Let's say we have a grade A recommendation.

We know it works.

We know we should do it.

Now we face the hardest, most unpredictable variable of all.

The human being sitting in front of us.

Exactly.

The psychology of change.

This is section three of the chapter.

And honestly, this might be the single most important skill a doctor can learn.

Because I can tell you to quit smoking until I'm blue in the face.

But if you aren't ready, I'm just noise.

You're just another nagging voice.

And that's why the text introduces the trans theoretical model, which is often just called the stages of change.

It's a framework for understanding where the patient is mentally.

Because you have to match counseling to their stage.

This is so important.

Let's walk through the stages using a specific example.

Let's say a patient who drinks a bit too much alcohol.

Okay.

Perfect example.

So stage one is pre -contemplation.

What is this patient saying to you?

They're saying I don't have a problem.

My grandpa drank a quart of whiskey a day and lived to be 90.

This is just how I unwind.

Leave me alone.

Right.

They are unaware or maybe in denial.

They don't see it as a problem.

If you try to give them a detailed action plan right now, they will just shut down completely.

So your goal isn't to get them to quit.

Not at all.

Your goal here is just to gently raise awareness, maybe plant a seed.

I hear you.

Can I share what I've seen in other patients?

Just open the door a tiny crack.

Okay.

So from pre -contemplation, they might move to stage two contemplation.

Now what are they saying?

Now they're saying, you know, I do feel kind of foggy in the mornings and my wife has been complaining about it.

I've, I've thought about cutting back, but I really love my glass of wine at night.

I'm not sure I want to give it up.

Ambivalence.

That's the key word for this stage.

They see the pros and the cons.

They're wrestling with it.

They are sitting on the fence.

Exactly.

And your job is not to push them off the fence, but to explore that ambivalence with them, help them tip their own balance toward change.

And if they do, they move to stage three.

Preparation.

Okay, doc, I'm going to do it.

I'm going to do dry January.

I've told my wife I bought some sparkling water.

I'm ready.

They have a plan.

They're getting ready to make the move.

Then comes action.

They are actually doing the thing.

They've stopped drinking or cut back to their goal.

And finally, if they stick with it, they reach maintenance.

They've been at their goal for six months or more and are working to prevent slipping back into old habits.

But the text adds a really crucial piece here.

It's not a straight line.

It's a spiral.

Yes.

The final stage, which isn't really a final stage is relapse.

Most people do not go from pre -contemplation to maintenance in one perfect linear shot.

They cycle through it.

They take action.

They slip up.

They learn from it.

And they try again.

And as clinicians, we need to normalize that completely.

If a patient comes back and says, I started smoking again, the response shouldn't be, you failed.

Never.

It should be, okay, that's a normal part of the process.

Tell me what happened.

What did we learn from this slip that helped us make the next attempt even stronger?

Exactly.

And the communication style that facilitates all of this, that helps guide people through these stages, is motivational interviewing.

I feel like MI is a buzzword that people misuse a lot.

They think it just means being nice to patients.

But it's a very specific technical skill.

It is.

It's a guiding style of conversation.

It's right between directing, which is just telling them what to do, and following, which is passively listening.

You're a guide walking alongside them.

And the whole point is to evoke the patient's own motivation for change, not impose your own.

That's the core of it.

You're not the source of motivation.

You're the midwife of their motivation.

The text in Box 6 -7 lists three core skills.

Ask, listen, and inform.

But the order and the way you do them is critical.

The order matters immensely.

You start by asking open -ended questions.

Not, do you want to quit?

Because that's a yes -no dead end.

Right.

It's, what are some of the good things and not -so -good things about your smoking?

Or, how does your smoking fit into your life right now?

Questions that invite a story.

Then after you ask, you have to listen.

And specifically, do what's called reflective listening.

This is the most powerful part.

If the patient says, I know I should lose weight, but by the time I get home from work I'm just exhausted and ordering a pizza is so easy, a bad response is, we need to meal prep on Sundays.

The classic fix -it response.

Right.

It's dismissive.

A motivational interviewer reflects back what they heard.

It sounds like you feel completely overwhelmed by your schedule, and convenience is really the most important thing for you at the end of a long day.

That validates them.

It makes them feel heard and understood.

It builds rapport.

And then, only then, after you've asked and listened, do you inform.

But, and this is the trick, you ask permission first.

I have some ideas that have worked for other busy patients.

Would you be open to hearing about a couple of them?

That dynamic shift is just huge.

You're not lecturing.

You're offering.

It respects their autonomy.

It changes everything.

Okay, so we've got the evidence.

We've got the psychology.

Now let's get into the weeds.

The specific guidelines for what to screen for and counsel on.

And we're going to start with a big one.

Section four touches on immunizations generally.

But before we get to the specific shots, I want to highlight the concept of herd immunity.

This is so crucial, especially now for public literacy.

When you get vaccinated, you aren't just building a protective wall around yourself.

You are contributing a brick to a much larger wall around the entire community.

Because there are people in that community who can't build their own wall.

Right.

Newborns who are too young for their shots.

People with compromised immune systems from cancer or chemotherapy.

People with certain allergies.

They rely on the fact that the virus has nowhere to go because everyone else is immune.

It's like a fire break.

Perfect analogy.

Yeah.

That herd coverage drops like we've unfortunately seen with measles in recent years.

The virus finds those cracks.

It finds the vulnerable people and they're the ones who suffer.

So getting your flu shot isn't just about you.

It's actually an act of civic service.

It absolutely is.

Okay, let's move to section five.

Specific screening guidelines for adults.

And we have to start with the most visible public health challenge we face.

Unhealthy weight and diabetes.

The statistics in the text are sobering.

Box six eight notes that nearly 38 % of U .S.

adults are obese.

And the link to morbidity is just undeniable.

Cardiovascular disease, sleep apnea, fatty liver disease, and of course type two diabetes.

We screen for this using BMI body mass index.

I know BMI gets a lot of hate online.

People say it doesn't account for muscle or the rock would be considered obese.

And you know what?

That's true.

For a tiny fraction of the population like elite athletes, BMI is not a perfect measure of body fat.

But for the vast majority of the people who are not professional body builders,

it correlates very, very well with body fat and with health risks.

It's a quick, cheap, and effective population level screening tool.

Exactly.

And you need to know the cutoffs from box six nine by heart.

Let's run through them.

Underweight is a BMI of less than 18 .5.

Normal is 18 .5 to just under 25.

Overweight is 25 to just under 30.

And obese is anything over 30.

And because obesity is such a powerful driver of diabetes, the USPSTF has linked their screening recommendations.

Correct.

The recommendation is grade B screen all overweight or obese adults between the ages of 40 and 70 for abnormal blood glucose.

How do we screen?

What are we ordering?

Usually it's a blood test, either hemoglobin A1C or fasting glucose.

If that A1C comes back at 6 .5 % or higher, or a fasting glucose is 126 or higher on two separate occasions, that's diagnostic for diabetes.

Okay.

Moving from food to drugs,

substance use disorders.

This is a tough conversation for many clinicians to start.

It can feel intrusive or judgmental.

But with the opioid crisis and, as the text notes in box 610, over 30 million Americans using illicit drugs, you have to ask.

But you can't just ask, so do you do any illegal drugs?

The patient will almost certainly lie or

Right.

So the National Institute on Drug Abuse, NIDA, recommends a very specific, validated single question screen.

It's framed very carefully and non -judgmentally.

It goes,

That phrase non -clinical reasons is so key.

That covers the person borrowing their spouse's Vicodin for a backache or a student taking a friend's Adderall to study.

Exactly.

And the magic of this single question is its sensitivity.

If the answer is one or more, that is considered a positive screen.

It doesn't mean they have an addiction, but it warrants a deeper dive.

It warrants the follow -up questions.

Tell me more about that.

What are you using?

Have you ever tried to cut down?

Has it affected your job or your relationships?

Interestingly, the USPSTF currently gives universal screening for illicit drugs in the general adult population a grade I insufficient evidence.

But given the public health reality, most guidelines encourage clinicians to be alert and to use these tools when a patient's history or situation suggests a risk.

Speaking of uncomfortable but necessary topics, let's talk about internet partner violence, IPV, and elder abuse.

This is another silent epidemic.

The stats in Box 611 are just staggering.

One in three women, and surprisingly to many, one in three men, experience some form of IPV in their lifetime.

And homicide is a leading cause of death for young women.

And yet victims so rarely bring it up spontaneously.

There's shame, there's fear, there's denial.

So the clinician has to be the one to initiate.

But again, just blurting out, are you safe at home, can feel robotic and jarring.

It can.

So the text suggests a normalizing introduction.

You frame it as a standard part of comprehensive health care.

You can say something like, because violence and abuse are unfortunately common in the lives of many of my patients, I've begun to ask everyone about it routinely.

I like that.

Takes the spotlight off them specifically and makes it about your protocol.

It's not I'm asking you because I think something's wrong with you.

Exactly.

Then you can move into specific, behaviorally focused questions.

Are there times you feel unsafe in your home?

Have you ever been hit, kicked, punched, or otherwise hurt by your partner?

There are formal tools mentioned.

Hark, hits, WASD are some acronyms.

But the core is starting the conversation.

And what's the recommendation here?

It's a great B to screen all women of reproductive age for intimate partner violence.

For elder abuse, the evidence is harder to gather.

So it's a great eye.

But any clinician who sees an elderly patient with unexplained bruises, missed appointments,

sudden social withdrawal, or strange financial changes, your clinical radar must be up.

Okay, so we've screened, we've identified these risks.

Now we have to do something about them.

We have to counsel.

Section six focuses on counseling guidelines.

Let's circle back to weight loss, because this is an area where I feel like doctors often fail.

They just say you need to lose weight and then move on.

Which is completely useless advice.

The text is clear on this.

For patients with a BMI over 30, we need to offer or refer them to intensive, multi -component behavioral interventions.

That means 12 to 26 sessions a year with a counselor, a nutritionist, a health coach.

It's a real commitment.

And we need to help patients set realistic goals.

People watch reality TV and think they need to lose 50 pounds in a month.

When in reality, the text is very clear.

A sustained loss of just 5 % to 10 % of their starting body weight is clinically significant.

If you weigh 200 pounds, losing 10 to 20 pounds can drastically lower your blood pressure and cut your diabetes risk in half.

But the text also explains why it's so damn hard.

It talks about the physiology of failure.

This is so important for clinicians to understand.

This is vital for empathy.

When you lose weight, your body doesn't celebrate.

Your ancient biology views it as a threat to survival, as starvation, and it fights back with a vengeance.

How does it fight back?

Hormones change.

Grelin, the hunger hormone, goes up screaming eat.

Leptin, the satiety hormone that says you're full, goes down.

Your basal metabolic rate actually drops to conserve energy.

Your body becomes more efficient at storing fat.

So the patient isn't just weak -willed when they struggle.

They are literally fighting their own biology every step of the way.

Exactly.

That is why the recommendation is start low and go slow.

A safe, sustainable rate of weight loss is about 0 .5 to 2 pounds a week.

Anything faster just triggers that starvation response too aggressively.

And for diet, what's the general advice?

The my plate visual described in the text is the standard.

It's simple and effective.

You look at your plate,

half of it should be fruits and vegetables.

The other half should be split between whole grains and lean proteins.

To watch the hidden stuff, right?

Definitely.

Yeah.

Especially sodium.

The guideline is under 2 ,300 milligrams a day.

That's about one teaspoon of salt for the entire day.

It adds up incredibly fast in processed foods, suits, and bread.

And physical activity.

I feel like this prescription is often way too vague.

You should exercise more.

It needs to be specific.

The

week.

That's about 30 minutes a day, five days a week.

What's moderate?

Think brisk walking.

You can still hold a conversation, but you're a little breathless.

Or you could do 75 to 150 minutes of vigorous activity.

Think running or jogging.

Plus, muscle strengthening activities at least twice a week.

But again, for the 60 -year -olds who has been sedentary for 20 years, you don't start them with a prescription to jog for 75 minutes.

Absolutely not.

Start low and go slow.

Walking to the mailbox is better than sitting on the couch.

Start there.

Build confidence.

Then walk to the end of the block.

The best exercise is the one the patient will actually do.

Now, section seven covers areas that are a blend of screening and counseling.

And we need to talk about alcohol, because I think most people have absolutely no idea what moderate or risky drinking actually is.

It is shocking to most people when they hear the real numbers.

First, let's define a standard drink, which is in box 618.

It's not one glass.

It is exactly 12 ounces of regular beer, five ounces of table wine, or 1 .5 ounces of 80 -proofed spirits.

And if you pour yourself a big glass of wine at home after a long day, it's probably eight or nine ounces.

So that's nearly two standard drinks right there in one glass.

Exactly.

And the definition of unsafe use or risky use is much stricter than people think.

For men under 65, it's defined as more than 14 drinks per week, or more than four drinks on a single day.

And for women, and men over 65.

The limit is lower.

More than seven drinks per week, or more than three drinks in a day.

So for a woman, one glass of wine every night is basically the limit.

Two glasses a night is officially defined as risky use.

According to the national guidelines, yes, it puts you at increased risk for long -term health issues like liver disease, cancer, and heart problems.

How do we screen for this quickly without sounding judgmental?

The text recommends the SQ, the single alcohol screening question.

It's very direct.

How many times in the past year have you had X or more drinks in a day?

Where X is five for men and four for women.

It's asking specifically about binge drinking behavior.

Right.

It's highly sensitive.

And then of course, there's the famous cage questionnaire.

It's a mnemonic that's been around forever because it works.

Let's quickly run through it.

C -A -G -E.

C is for cut down.

Have you ever felt you should cut down on your drinking?

A is for annoyed.

Have people annoyed you by criticizing your drinking?

G is for guilty.

Have you ever bad or guilty about your drinking?

And E -E.

E is for eye opener.

Have you ever had a drink first thing in the morning to steady your nerves or get rid of a hangover?

And two or more yes answers is a positive screen.

It is.

It suggests alcohol misuse and warrants a longer conversation.

The eye opener question in particular is highly suggestive of physical dependence.

And the USPSTF gives brief behavioral counseling for this, a grade B.

Okay, next up, tobacco.

Still the leading cause of preventable death in the country.

It's just a staggering number.

480 ,000 deaths a year in the US alone.

And it's not just lung cancer.

It's bladder cancer, cervical cancer, kidney cancer, esophageal cancer, cardiovascular disease, COPD.

The list goes on.

And now we have the added complexity of e -cigarettes.

Vaping.

Which the text correctly notes is now the most common form of tobacco use among youth.

We are creating an entirely new generation of people addicted to nicotine.

Screening for tobacco use is a grade A recommendation.

Ask every single adult at every single visit, do you use tobacco in any form?

And if they say yes, we use the five A's framework from box 620.

This is a great simple tool.

First, ask about their use, then advise them to quit.

And this should be clear, strong, and personalized advice.

As your doctor, the most important thing you can do for your health is to quit smoking.

Then assess.

Assess their readiness to quit.

Are they in pre -contemplation or are they in the preparation stage?

That tells you how to tailor the rest of the conversation.

Then you assist them in their quit attempt.

And assist means more than just a pat on the back.

Oh, much more.

Don't just say good luck with that.

You offer medication, nicotine patches, gum, lozenges.

You prescribe varenicline or bupropion.

You provide counseling referrals.

The evidence is overwhelming that the

pharmacotherapy plus counseling is far more effective than either one alone.

And this final - Arrange follow -up.

Don't just send them out the door.

Schedule a check -in call or a visit a week or two later to see how they're doing.

It shows you're invested in their success.

Let's talk about sex, STIs, and HIV.

Section 7 ends with this heavily charged, but critically important topic.

The numbers here are concerning.

The rates of chlamydia, gonorrhea, and syphilis are rising nationally.

And we still have over a million people living with HIV in the US.

We have to be proactive about this.

The key to this is taking a good sexual history.

And the text emphasizes the importance of neutrality and using non -judgmental language.

Absolutely.

You cannot assume anything about anyone.

You don't assume a patient's sexual orientation, gender identity, or practices based on how they look, their age, or their marital status.

You just ask.

The 5PS framework is the standard way to guide the conversation.

Let's list them.

Partners, practices, protection from STIs, past history of STIs, and pregnancy prevention.

Simple direct questions.

In the past year, have you had sex with men, women, or both?

What kind of sexual contact do you have?

Do you and your partners use condoms or other barriers?

Have you ever been tested for an STI?

It's just collecting data.

Direct non -judgmental matter of fact.

Exactly.

And based on that history, you apply the screening recommendations.

For chlamydia and gonorrhea, the USPSTF recommends screening all sexually active women under the age of 25 annually.

Why specifically under 25?

Because that is where the highest prevalence of asymptomatic infection is.

It's a grade B recommendation.

For women over 25, you screen only if they have new or multiple risk factors.

And HIV.

The recommendation is broader and stronger.

The USPSTF recommends screening all adolescents and adults aged 15 to 65.

It's a grade A.

Everyone, regardless of risk.

Everyone.

At least once in their lifetime, and more often for people at high risk.

The CDC actually recommends an opt -out approach to testing.

What does that mean?

It means you normalize it.

You say, as part of your routine blood work today, we're going to include an HIV test, unless you'd prefer that we didn't.

It destigmatizes it and makes it a standard part of health care, which it should be.

And for prevention, we have a true game changer now.

Pre -EP, pre -exposure prophylaxis.

This has been revolutionary.

If you have a patient who is HIV negative, but at high risk, for example, their partner has HIV, or they engage in condomless sex with multiple partners, taking a daily pill can reduce their risk of acquiring HIV through sex by nearly 99%.

It's a huge part of the assist step in counseling.

All right.

We are in the homestretch.

Section 8, the adult immunization guidelines.

This is the part that usually puts students to sleep, but these are the tools that literally change human civilization.

So let's not just list them.

Let's explain the why behind them.

Okay.

Let's group them logically.

Let's start with the big respiratory viruses.

First, influenza.

The flu shot, who gets it?

Pretty much everyone, six months and older, every single year, unless they have a specific severe contraindication.

What's the deal with the nasal spray vaccine?

The nasal spray is a live attenuated virus.

That means it's a weakened version of the real flu virus.

Because it's live, we don't give it to pregnant women or people who are severely

immunocompromised.

But for healthy, non -pregnant people from age 2 to 49, it's a fine option if they prefer it over a shot.

And for the older folks, there's a special version too, right?

Yes.

Adults over 65 have a less robust immune response to vaccines in general.

So we give them a high dose flu vaccine, which contains more antigen to really kickstart their immune system and give them better protection.

Okay.

Next respiratory one, pneumococcal, the pneumonia vaccine.

This is the confusing one with all the numbers.

It is tricky, and the guidelines have changed a bit over the years.

We have two main types of vaccine,

PCV13, which is a conjugate vaccine, and PPSV23, which is a polysaccharide vaccine.

Why are there two different kinds?

They work in different ways.

They protect against different strains of the bacteria and stimulate the immune system differently.

The conjugate vaccine, PCV13, now also PCV15 and PCV20, creates a stronger, longer lasting immune memory.

The polysaccharide one, PPSV23, covers more strains, but gives a less durable response.

So who needs them?

Definitely all adults 65 and older, and also younger adults from 19 to 64 who smoke or have chronic conditions like diabetes, asthma, or heart disease.

The exact sequencing, who gets which one first, can be complicated.

So the best advice is to check the latest CDC schedules.

It changes often.

Okay.

Let's talk about the rashes.

Varicella, which is chickenpox, and herpes zoster, which is shingles.

So if you were born before 1980 in the U .S., we generally just assume you had chickenpox as a kid and are immune.

If you're born after 1980 and never had the infection or the shots, you need two doses of the varicella vaccine.

But importantly, it's a live vaccine, so no giving it to pregnant patients.

But shingles, that's the reactivation of that same chickenpox virus that's been dormant in your nerves for decades.

And it is miserable and can lead to debilitating chronic pain.

The new vaccine, shingrix, is a modern triumph of immunology.

It's a recombinant vaccine, not a live virus, and it is incredibly effective, over 90%, at preventing shingles.

Who gets shingrips?

All adults 50 and older.

It's a series of two doses given two to six months apart.

And even if you've already had a case of shingles, you should still get the vaccine to prevent it from happening again.

Okay.

The boosters.

Teedap and Teed.

This is tetanus, diphtheria, and pertussis, or whooping cough.

Every adult needs a teed booster every 10 years to stay protected against tetanus.

But at least once in your adult life, you should swap one of those teed boosters for a Teedap, which includes the pertussis component.

And there's a very unique rule for pregnancy here.

Yes.

This is critical.

Pregnant women should get a Teedap booster during every single pregnancy, usually in the third trimester between 27 and 36 weeks.

Every pregnancy.

Why?

It's not primarily for the mom.

It's for the baby.

The mom's body makes a huge surge of antibodies to whoop and cough, and she passes those antibodies through the placenta to the fetus.

The baby is then born with passive protection for those first critical months of life before they're old enough to get their own shots.

It's called cocooning.

That is just amazing biology.

Finally, let's talk about HPV.

The cancer -preventing vaccine.

It prevents cervical, anal, vulvar, penile, and throat cancers that are caused by the human papillomavirus.

The standard age to start this is 11 or 12.

But the recommendations for older people have been expanding.

Right.

Catch -up vaccination is recommended for everyone through age 26.

And more recently, the FDA approved it for shared clinical decision -making in adults up to age 45.

It's a conversation with your patient.

You might have already been exposed to some strains of HPV, but the vaccine could still protect you from other strains you haven't encountered.

Wow.

We have covered a massive amount of ground.

From the philosophy of enabling control to the exact number of alcoholic drinks allowed per week.

It is a lot.

But that's the job of a primary care clinician.

It's comprehensive.

It really highlights that the clinician's role is so much more than just being a diagnostician.

You have to be a counselor, a statistician, a negotiator, and sometimes a cheerleader.

It connects everything back to the beginning of the book.

The history -taking identifies the risk factors.

The physical exam looks for the early, subtle signs.

Your clinical reasoning synthesizes all the evidence and the plan.

The plan is where you can actually change the future.

I want to leave everyone with a final thought on what I think of as the paradox of prevention.

If you do this job perfectly,

nothing happens.

Right.

The non -event is the victory.

Exactly.

The patient doesn't get the stroke.

They don't get the colon cancer.

They don't have the heart attack.

There is no drama.

There is no big thank you for saving my life moment because they never even knew their life was in danger.

It is a completely invisible victory.

And that takes a special kind of dedication, I think, to find your professional satisfaction in the quiet, healthy,

uneventful years your patients get to live, even if they never fully know that you were the one who bought them that time.

That is the very essence of primary care.

Thank you so much for breaking all this down with us.

This was fantastic.

My pleasure.

It's important stuff.

And to our listeners, keep guiding, keep screening, and keep asking the tough questions.

A warm thank you from the Last Minute Lecture team.

We'll see you in the next deep dive.