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Integrative psychiatry, pillar: Lifestyle

Lifestyle: relationships, food, and movement are treatment, not homework

Lifestyle6 min readReviewed by Justin Schwarting, DNP, PMHNP-BC
NNT 2one additional person improves for every two treated with supervised exercise for depression, across 41 randomized trials.
32% vs 8%remission from depression with a dietitian-led diet change versus social support in the SMILES trial.
11 to 18%of depression in adults over 50 could be prevented if loneliness were eliminated, in a 12-year cohort.

Lifestyle is the pillar most often reduced to a pamphlet. Eat better, move more, get some sleep, see your friends. Everybody has heard it, and almost nobody was told it is one of the strongest evidence-based treatments we have. It is, and the numbers below are why we treat it as part of the plan rather than advice on the way out the door.

Movement

A 2023 meta-analysis of 41 randomized trials in the British Journal of Sports Medicine found a large effect of exercise on depression, with a number needed to treat of 2. That means for every two people who take up supervised exercise, one gets meaningfully better who otherwise would not. A 2024 network meta-analysis in The BMJ covering 218 trials and 14,000 people found walking or jogging, yoga, and strength training were the most effective forms, that the benefit rose with intensity, and that yoga and strength training were the easiest for people to stick with. For teenagers, combined aerobic and resistance training works best. For older adults, resistance training and mind-body exercise lead, and the benefit shows up at doses below the standard public health guideline.

Exercise is not a substitute for medication when medication is the right call. It is one of the best things you can add to it.

Food

The SMILES trial randomized adults with moderate to severe depression to either seven sessions with a dietitian, working toward a Mediterranean-style pattern, or the same number of social support sessions. After 12 weeks, 32 percent of the diet group were in remission compared with 8 percent of the support group. Meta-analyses of Mediterranean-diet trials since then show a moderate benefit in people with depression, and large cohorts link ultra-processed food to higher risk and Mediterranean-style eating to lower risk. The evidence for food is still younger and messier than the evidence for exercise, and we say so. But it is strong enough that what you eat is part of the conversation, sized to what you can actually change this month.

Relationships

Loneliness is not a character flaw. It is a risk factor, and a treatable one. A 12-year study of adults over 50 estimated that 11 to 18 percent of depression in that group could be prevented if loneliness were eliminated. Genetic studies show the link runs in both directions: loneliness raises the risk of depression and depression deepens loneliness. Social connection protects against depression in most long-term studies, and a 2025 meta-analysis of 280 studies found loneliness interventions produce small to moderate improvements that hold for months. Nature-based group activities and community "social prescribing" programs are among the approaches with the most promise.

So we ask about the people around you, the ones who help and the ones who do not, and about work, school, and the environment you live in. Sometimes the most useful thing in a plan is one specific relationship to rebuild.

Putting it together

Multi-part lifestyle programs that combine movement, food, sleep, and stress work reduce depression in trials, with larger effects in people with major depression. In a 2024 randomized trial, an online lifestyle program delivered by a dietitian and exercise physiologist was as effective as CBT delivered by psychologists. That is the bar we hold lifestyle work to at Better Place Now: not a pamphlet, a treatment, chosen with you and written into the plan.

What this means for you

The research tells us which levers move the needle for people in general. Which one is worth pulling first for you, and how to make it stick in a life that already feels full, is what we work out together. We pick one or two, size them to the next month, and write them into the plan next to the medication decisions.

This is how a first visit at Better Place Now works. A full hour, by video anywhere in Arizona or in person by appointment, that looks at body, mind, and lifestyle before any medication decision. Request an appointment or call 480-660-2160.

References

This article summarizes peer-reviewed research. Ask about any of these at your visit.

  1. Heissel, A., et al. (2023). Exercise as medicine for depressive symptoms? A systematic review and meta-analysis with meta-regression. British Journal of Sports Medicine, 57(16), 1049-1057.
  2. Noetel, M., et al. (2024). Effect of exercise for depression: Systematic review and network meta-analysis of randomised controlled trials. BMJ, 384, e075847.
  3. Ma, M., et al. (2025). Comparative effectiveness and exploratory dose-response of exercise for adolescent depression: A network meta-analysis of randomized controlled trials. Journal of Affective Disorders.
  4. Tian, S., et al. (2024). Comparative efficacy of various exercise types and doses for depression in older adults: A systematic review of paired, network and dose-response meta-analyses. Age and Ageing, 53(10), afae211.
  5. Jacka, F. N., et al. (2017). A randomised controlled trial of dietary improvement for adults with major depression (the "SMILES" trial). BMC Medicine, 15, 23.
  6. Bizzozero-Peroni, B., et al. (2025). The impact of the Mediterranean diet on alleviating depressive symptoms in adults: A systematic review and meta-analysis of randomized controlled trials. Nutrition Reviews, 83(1), 29-39.
  7. Lassale, C., et al. (2019). Healthy dietary indices and risk of depressive outcomes: A systematic review and meta-analysis of observational studies. Molecular Psychiatry, 24, 965-986.
  8. Gauci, S., et al. (2026). Temporal changes in Mediterranean-style diet adherence and ultra-processed food exposure in relation to psychological distress at follow-up: A 12-year analysis of the Melbourne Collaborative Cohort Study. Journal of Affective Disorders.
  9. Lee, S. L., Pearce, E., et al. (2021). The association between loneliness and depressive symptoms among adults aged 50 years and older: A 12-year population-based cohort study. The Lancet Psychiatry, 8(1), 48-57.
  10. Sbarra, D. A., Ramadan, F. A., Choi, K. W., Treur, J. L., Levey, D. F., Wootton, R. E., Stein, M. B., Gelernter, J., & Klimentidis, Y. C. (2023). Loneliness and depression: Bidirectional Mendelian randomization analyses using data from three large genome-wide association studies. Molecular Psychiatry, 28, 4594-4601.
  11. Wickramaratne, P. J., et al. (2022). Social connectedness as a determinant of mental health: A scoping review. PLoS ONE, 17(10), e0275004.
  12. Lasgaard, M., et al. (2025). Are loneliness interventions effective for reducing loneliness? A meta-analytic review of 280 studies. American Psychologist.
  13. Wong, V. W., Ho, F. Y., Shi, N. K., Sarris, J., Chung, K. F., & Yeung, W. F. (2021). Lifestyle medicine for depression: A meta-analysis of randomized controlled trials. Journal of Affective Disorders, 284, 203-216.
  14. O'Neil, A., et al. (2024). Clinical and cost-effectiveness of remote-delivered, online lifestyle therapy versus psychotherapy for reducing depression: Results from the CALM non-inferiority, randomised trial. The Lancet Regional Health - Western Pacific, 49, 101142.

All research articles

This article is general health information from Better Place Now and is not medical advice for any individual. Research findings describe averages across groups of people; what is right for you depends on your history and a conversation with your clinician. Do not start, stop, or change a medication or supplement based on this article. If you are in crisis, call or text 988.