Live Long and Well with Dr. Bobby

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You unpack your bag, drop onto the couch, and wonder why you feel worse than when you left. That “vacation after the vacation” crash is not just bad luck or a weak willpower problem. We walk through a more useful explanation: travel quietly rewires your daily inputs all at once, from sleep timing and bedroom temperature to meal schedules, movement, quiet time, and even bathroom routines.

We dig into what the evidence says about travel and health, starting with physiology. Research suggests ordinary domestic travel can shift markers like morning cortisol, hinting that your body is genuinely responding to the disruption. Then we tackle the big question people argue about: does travel stress “lower immunity” and cause colds? Viral challenge studies point to chronic stress as the bigger risk, while vacation-style acute stress may not be the main culprit. A simpler explanation often wins: exposure. Airports, planes, restaurants, and family gatherings put you near more people, which increases the odds of encountering a contagious person.

Airplane myths get a close read too. Recirculated cabin air does not appear to be the smoking gun many assume, but dry cabin humidity can irritate airways and may slow mucociliary clearance, your nose and throat’s cleanup system. We also cover practical prevention options like hand hygiene, keeping hands off your face, and deciding whether an N95 mask is worth the hassle for you.

From there, we focus on the most reliable travel saboteur: sleep disruption. Large wearable data show sleep loss can begin the night before departure, and even when total sleep rebounds, sleep stages like REM and slow-wave sleep can take longer to normalize. We finish with the unglamorous but real topic of travel constipation and the simplest fixes, then land on a travel philosophy that actually works: do not optimize your vacation into a copy of home, just protect the few routines that matter most. Subscribe, share this with your favorite travel buddy, and leave a review on Apple or Spotify. What is the one habit you refuse to give up when you travel?
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Every day brings another health headline:
Coffee may prevent dementia.
Alcohol raises cancer risk.
A Mediterranean diet reduces diabetes.
A supplement lowers heart disease.
A new treatment cuts risk by 30%.
But should any of those headlines actually change what you do?
In this episode of Live Long and Well, I share five questions I use when reading a new medical study. They can help you separate an interesting finding from something important enough to change your diet, take a supplement, request a test, or start a treatment.
The Five Questions
Can I trust the evidence?
Was this an observational study, a randomized trial, an animal experiment, or something else?
How big is the effect—really?
A “30% reduction in risk” may sound enormous, but what was the starting risk? We explore why absolute risk can tell a very different story than relative risk.
Does it apply to me?
Who was studied? Were they people like you? And did researchers actually study the intervention you’re considering?
What’s the downside?
Benefits are only one side of the decision. Consider side effects, cost, inconvenience, time, anxiety—and the potential downside of doing nothing.
What should I do?
Sometimes the answer is act now. Sometimes it is discuss it with your physician, watch and wait, or simply keep scrolling.
Examples We Explore
Why eating fish and taking a fish-oil capsule are not necessarily the same thing
How mammography and the shingles vaccine illustrate the difference between relative and absolute risk
Why a Mediterranean lifestyle trial was much more than simply “eat more olive oil”
Why bicycle helmets are an easy decision despite a low risk on any single ride
Why aspirin can be highly valuable for one person and inappropriate for another
The aspirin example brings all five questions together: the same medication can produce a dramatically different absolute benefit depending on your starting cardiovascular risk.
Key Studies and References
Episode #22 Health headlines: helpful, harmful, or just confusing?
Bicycle helmets
Olivier J, Creighton P. Bicycle injuries and helmet use: a systematic review and meta-analysis. International Journal of Epidemiology.
https://pubmed.ncbi.nlm.nih.gov/27450862/
Fish oil — VITAL Trial
Manson JE, et al. Marine n−3 Fatty Acids and Prevention of Cardiovascular Disease and Cancer. New England Journal of Medicine.
https://pubmed.ncbi.nlm.nih.gov/30415637/
Fish oil — ASCEND Trial
ASCEND Study Collaborative Group. Effects of n−3 Fatty Acid Supplements in Diabetes Mellitus. New England Journal of Medicine.
https://pubmed.ncbi.nlm.nih.gov/30146931/
Mammography, ages 40–49
USPSTF systematic review of randomized screening trials.
https://www.ncbi.nlm.nih.gov/books/NBK343823/
Shingles vaccine — Shingrix
Lal H, et al. Efficacy of an Adjuvanted Herpes Zoster Subunit Vaccine in Older Adults. New England Journal of Medicine.
https://pubmed.ncbi.nlm.nih.gov/25916341/
Alcohol and cancer
Bagnardi V, et al. Alcohol consumption and site-specific cancer risk: a comprehensive dose-response meta-analysis. British Journal of Cancer.
https://pubmed.ncbi.nlm.nih.gov/25422909/
Mediterranean lifestyle and diabetes — PREDIMED-Plus
Konieczna J, et al. Comparison of an Energy-Reduced Mediterranean Diet and Physical Activity Versus an Ad Libitum Mediterranean Diet in the Prevention of Type 2 Diabetes. Annals of Internal Medicine.
https://pubmed.ncbi.nlm.nih.gov/40854218/
Aspirin — primary vs secondary prevention
Antithrombotic Trialists’ Collaboration. Aspirin in the primary and secondary prevention of vascular disease. The Lancet.
https://pubmed.ncbi.nlm.nih.gov/19482214/
Aspirin in healthy older adults — ASPREE
McNeil JJ, et al. Effect of Aspirin on Cardiovascular Events and Bleeding in the Healthy Elderly. New England Journal of Medicine.
https://pubmed.ncbi.nlm.nih.gov/30221597/
USPSTF aspirin recommendation
https://www.uspreventiveservicestaskforce.org/uspstf/recommendation/aspirin-to-prevent-cardiovascular-disease-preventive-medication
Download the Action Guide
Use the Five-Question Filter the next time a health headline catches your attention:
Download the one-page graphic action guide
The bottom line
The headline is only the beginning of the story.
Before changing what you do, ask better questions.
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Concierge medicine promises something many patients desperately want: more time with their doctor, easier access, and appointments when they actually need them. But as concierge practices rapidly expand—and corporations, non-physicians, and heavily marketed longevity programs enter the field—the concierge label no longer guarantees excellent primary care.
In this episode, I’m joined by two board-certified internal medicine physicians with firsthand experience in this changing model. Dr. Spyros Smith has practiced concierge medicine for many years, while Dr. Hayan Yacoub is transitioning from a large, busy internal medicine practice to establish Yacoub Signature Medicine, with an interest in evidence-based longevity care.
We discuss why traditional primary care can feel so frustrating. A typical physician may care for approximately 2,000 patients, offer visits lasting only 15–18 minutes, and have limited availability for urgent concerns. By comparison, a concierge physician may care for only 300–500 patients and provide longer appointments, same-day visits, and access by phone, text, or email.
But more access does not automatically mean better outcomes. We explore research discussed in the episode suggesting that concierge care may cost substantially more because of additional testing and services, without a demonstrated difference in five-year mortality. We also examine the rapid growth of corporate ownership, the rise of expensive testing, supplements, hormones, and protocols, and the pressure physicians may face to approve prescriptions, scans, or referrals simply to meet paying patients’ expectations.
Before joining a concierge practice, ask what the annual fee actually includes, who will care for you during and after office hours, what additional costs you may face, and how the practice approaches routine testing, specialist referrals, medications, and imaging.
Takeaways: Concierge medicine can provide valuable time, access, and continuity—especially for people who are unhappy with their current primary care experience. However, the term “concierge” does not guarantee evidence-based or higher-quality medicine. Understand exactly what you are paying for, evaluate the physician’s training and philosophy, and remember: buyer beware.
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Sign up for Dr. Bobby's 1-page action "Prescriptions"
We follow the daylight saving time debate into a deeper question: whether your chronotype makes you a night owl or a morning lark, and how that fit with real life changes your sleep, performance, and health. I share what the evidence says about social jet lag, why synchrony matters more than labels, and how to decide whether to change your schedule or try to shift your body clock. 
• what chronotype means and how it shows up in daily energy, appetite, and sleep 
• why social jet lag happens and how to measure it with weekend vs weekday timing 
• what studies suggest about cognitive performance when timing matches your chronotype 
• how exercise performance can depend on morningness or eveningness 
• observational links between evening types, cardiometabolic risk, metabolic syndrome, and mental health 
• how light therapy, meal timing, exercise timing, and caffeine timing can shift the clock 
• practical steps to reduce a mismatch, including consistent wake times and gradual changes 

If you like this episode, please provide a review on Apple or Spotify or wherever you listen. 
If you want to continue this journey or want to receive my newsletter on practical and scientific ways to improve your health and longevity, please visit me at Dr. Bobby Livelongandwell.com. 

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That red number in your lab portal can hit like a verdict. We know the feeling: your mind jumps from one “abnormal” result to the worst-case story, even if you feel the same as you did yesterday. But medicine has changed, and “abnormal” often reflects how much we measure, how we define normal ranges, and how quickly a borderline finding can turn into a lifelong label.

We walk through why it’s become so hard to stay “normal” on paper without ever getting sick. First, we simply test more, and when you run enough labs or scans, something is bound to look off. We dig into classic examples like back MRIs that look abnormal in many pain-free people, plus thyroid cancer screening that found far more “cancer” without reducing mortality. We also talk about genetic testing, including APOE status for dementia risk, and the key question most people forget to ask before ordering a test: what will I do with this information?

Next, we tackle moving goalposts, when guidelines shift for blood pressure and LDL cholesterol. Earlier detection can save lives, but it can also turn huge portions of the population into patients overnight. Finally, we discuss the rise of new labels for common symptoms and why the suffering can be real even when the diagnosis is not clearly evidence-based.

Our practical takeaway is a four-question framework you can use with your doctor: Is it real? Is it relevant? Is it risky to me? Is it resolvable? If this helped, subscribe, share it with a friend who is staring at a red result, and leave a review on Apple or Spotify.
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