10 Things NOT to do to Help You Live Longer, Healthier, and Happier

By David Haines, Ph.D.

Edited and approved by Stephen C. Rose, Ph.D.

The journey to a longer life and a longer healthspan does not begin with supplement stacks, hacks, or optimization theater. It points toward avoiding a familiar set of high-impact risks. Across cohort studies, combinations of unhealthy behaviors are associated with substantially higher all-cause and cardiovascular mortality, which is not especially novel advice but remains stubbornly true.[2] The list is familiar because the biology is familiar. Bodies tend to fare better when they are not repeatedly asked to compensate for smoke exposure, inactivity, sleep loss, heavy drinking, social isolation, and chronic neglect. The good news, if that is the word, is that many of these risks are modifiable.

1. Don't Blame Genetics for Everything.

Longevity has a genetic component, but the effect is neither simple nor destiny-like. Human aging research shows that lifespan-related genetic influences are distributed across many variants, each with modest effects, and those effects interact constantly with environment, behavior, and disease exposure.[1] That is not a reason for fatalism. It is a reason to stop pretending that inherited risk cancels out the rest of daily life. The strongest practical message from longevity research is still inconveniently ordinary: people cannot choose their genome, but they can influence how much additional risk they add to it.[1,2]

2. Don't ignore preventive and Dental Care.

A longer life is hard to build if blood pressure, glucose, lipids, vaccination status, and age-appropriate screening are treated as optional admin. Many important cardiometabolic risks are quiet for years, which is why evidence-based screening exists in the first place.[3] Dental care belongs in the same conversation. Periodontal disease is not just a local nuisance; it has been linked to systemic inflammatory burden and broader health risks, making neglecting oral health a surprisingly effective way to make the rest of the body's job harder.[4]

3. Don't Smoke, and Don't Assume Vaping Fixes the Problem.

Smoking remains one of the clearest avoidable drivers of premature mortality. Meta-analytic evidence in older adults still shows a marked increase in all-cause mortality among current smokers, with measurable benefit from cessation even later in life.[5] E-cigarettes are sometimes marketed as a cleaner workaround, but umbrella-review evidence does not support treating them as harmless. Their long-term effects remain incompletely defined, and the existing literature continues to raise concerns about cardiopulmonary and carcinogenic risks.[6] If the goal is longevity, nicotine delivery systems should not be mistaken for a health practice simply because the packaging looks modern.

4. Don't Treat Alcohol as a Longevity Tonic.

The romantic image of alcohol as a small daily health ritual persists well beyond what the evidence comfortably supports. Global burden analyses show that alcohol contributes substantially to death and disability across populations, with risk rising as intake increases.[7] Some outcomes have historically complicated the public narrative around low-level consumption, but the broader evidence base is not a license for casual reassurance. 

5. Ultra-Processed Food is the ultimate dietary approach for an early checkout.

A large umbrella review found that greater exposure to ultra-processed food was associated with a range of adverse outcomes, including higher risks of all-cause mortality, cardiometabolic disease, and several mental health outcomes.[8] The useful lesson is pattern quality. Diets centered on minimally processed foods, fiber-rich staples, legumes, nuts, fruit, vegetables, and reasonably intact sources of protein tend to demand less downstream cleanup from the body.

6. Sitting is indeed the new smoking.

Higher all-cause and cardiovascular mortality sit with you when you sit all the time. Further, you can’t just be a beast in the gym for one hour a day and undo the effects of all of that sitting. [9] That said, the relationship is not morally binary. The risks of prolonged sitting can be partially offset through increased physical activity. For the desk-bound and otherwise sedentary, this lends hope. [10] The key takeaway is that gym time is great, but breaking up sedentary carries weight also - no pun intended. 

Higher levels of physical activity can offset some of the excess risk associated with prolonged sitting, which is good news for people who work at desks, not a permission slip to remain motionless for 11 hours.[10] The practical point is simple: structured exercise matters, but so does breaking up sedentary time. So, walk and stand whenever possible.

7. Don't Treat Sleep as Spare Time.

People readily sacrifice sleep in the name of getting things done. Poor sleep hygiene can lead to devastating physical consequences in the form of ulcers, cardiovascular disease, diabetes, and mortality. Too much or too little sleep is associated with higher all-cause mortality.[11] 

8. Don't Treat Mental Health as Secondary.

Mental disorders are associated with elevated all-cause mortality across diagnostic categories, a finding that should have ended the fiction that mental health sits off to one side of real health.[12] Depression, anxiety, substance use, trauma, and other psychiatric conditions can influence sleep, appetite, medication adherence, activity, relationships, and cardiometabolic regulation all at once. Seeking treatment is therefore not a soft extra. It is part of risk management. Therapy, medication, peer support, and structured care are not signs of fragility; they are methods for reducing the collateral damage that untreated distress can produce over time.

9. Don't Live in Social Isolation.

Loneliness and social isolation are associated with increased mortality risk in meta-analytic data, even after accounting for many other variables.[13] That does not mean everyone needs a huge social circle or a performative schedule full of events. It means human connection appears to matter in ways that are biologically and behaviorally consequential. Isolation and alienation are bedfellows with insomnia, sedentary behavior, and low stress tolerance.

10. Don't  Wait for Ideal Conditions to Start Doing the Basics.

The high-impact pieces of longevity remain stubbornly unglamorous: avoid smoking, move more, eat better, sleep regularly, keep up with preventive care, and lower the number of risks that travel together.[2,9,11] People often delay change because they are waiting for a future version of themselves who is less busy, less tired, more disciplined, and somehow thrilled by meal prep. That person may never arrive.Longevity is helped more by removing repeat offenders than by chasing miracles. That may be less exciting than most longevity marketing, but it is much closer to the data.

References

[1] Melzer, D.; Pilling, L.C.; Ferrucci, L.The genetics of human ageing. Nat. Rev. Genet. 2020;21(2):88-101. PMID: 31690828.

[2] van Dam, R.M.; Li, T.; Spiegelman, D.; Franco, O.H.; Hu, F.B.Combined impact of lifestyle factors on mortality: prospective cohort study in US women. BMJ 2008;337:a1440. PMID: 18796495.

[3] Piper, M.A.; Evans, C.V.; Burda, B.U.; Margolis, K.L.; O?Connor, E.; Smith, N.; Webber, E.; Perdue, L.A.; Bigler, K.D.; Whitlock, E.P.Screening for High Blood Pressure in Adults: A Systematic Evidence Review for the U.S. Preventive Services Task Force. AHRQ Evidence Syntheses 2014. PMID: 25632496.

[4] Kalhan, A.C.; Wong, M.L.; Allen, F.; Gao, X.Periodontal disease and systemic health: An update for medical practitioners. Ann. Acad. Med. Singap. 2022;51(9):567-574. PMID: 36189701.

[5] Gellert, C.; Sch?ttker, B.; Brenner, H.Smoking and all-cause mortality in older people: systematic review and meta-analysis. Arch. Intern. Med. 2012;172(11):837-844. PMID: 22688992.

[6] Travis, N.; Knoll, M.; Han, Y.; Hemler, E.; Berman, M.; Viner, R.; O?Flaherty, M.; Allen, L.Health Effects of Electronic Cigarettes: An Umbrella Review and Methodological Considerations. Int. J. Environ. Res. Public Health 2022;19(15):9054. PMID: 35897421.

[7] GBD 2016 Alcohol CollaboratorsAlcohol use and burden for 195 countries and territories, 1990-2016: a systematic analysis for the Global Burden of Disease Study 2016. Lancet 2018;392(10152):1015-1035. PMID: 30146330.

[8] Lane, M.M.; Gamage, E.; Du, S.; Ashtree, D.N.; McGuinness, A.J.; Gauci, S.; Baker, P.; Lawrence, M.; Rebholz, C.M.; Srour, B.; Touvier, M.; Jacka, F.N.; O?Neil, A.; Segasby, T.; Marx, W.Ultra-processed food exposure and adverse health outcomes: umbrella review of epidemiological meta-analyses. BMJ 2024;384:e077310. PMID: 38418082.

[9] Patterson, R.; McNamara, E.; Tainio, M.; de S?, T.H.; Smith, A.D.; Sharp, S.J.; Edwards, P.; Woodcock, J.; Brage, S.; Wijndaele, K.Sedentary behaviour and risk of all-cause, cardiovascular and cancer mortality, and incident type 2 diabetes: a systematic review and dose response meta-analysis. Eur. J. Epidemiol. 2018;33(9):811-829. PMID: 29589226.

[10] Ekelund, U.; Steene-Johannessen, J.; Brown, W.J.; Fagerland, M.W.; Owen, N.; Powell, K.E.; Bauman, A.; Lee, I.-M.Does physical activity attenuate, or even eliminate, the detrimental association of sitting time with mortality? A harmonised meta-analysis of data from more than 1 million men and women. Lancet 2016;388(10051):1302-1310. PMID: 27475271.

[11] Cappuccio, F.P.; D?Elia, L.; Strazzullo, P.; Miller, M.A.Sleep duration and all-cause mortality: a systematic review and meta-analysis of prospective studies. Sleep 2010;33(5):585-592. PMID: 20469800.

[12] Chesney, E.; Goodwin, G.M.; Fazel, S.Risks of all-cause and suicide mortality in mental disorders: a meta-review. World Psychiatry 2014;13(2):153-160. PMID: 24890068.

[13] Holt-Lunstad, J.; Smith, T.B.; Baker, M.; Harris, T.; Stephenson, D.Loneliness and social isolation as risk factors for mortality: a meta-analytic review. Perspect. Psychol. Sci. 2015;10(2):227-237. PMID: 25910392.