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← Back to blogIs It Possible to Strengthen Mental Health?
When it comes to "improving" mental health, the conversation always focuses on treatment. Yet the brain's protective foundations are laid before illness begins.
Over the past 10 years, preventive psychiatry has produced strong evidence that lifestyle really does reduce the risk of mental disorders. Current treatments can address only about one-third of the global burden of disease — the rest falls within the realm of prevention.
8 protective factors identified in the literature:
→ Physical activity: People who are physically active for 150 minutes a week have a 23% lower risk of depression (Rahmati, 2024 — umbrella review).
→ Sleep: People with regular sleep patterns had a 38% lower risk of depression and a 33% lower risk of anxiety over 7.5 years of follow-up. It is not just duration that matters, but regularity (Li, 2025 — UK Biobank).
→ Mediterranean-style diet: High adherence is associated with a 33% lower risk of depression (Lassale, 2018 — Molecular Psychiatry).
→ Social connection: Loneliness is a risk factor for premature death comparable to smoking and obesity (Holt-Lunstad, 2024 — World Psychiatry).
→ Nature: A 10% increase in green space reduces the risk of depression by ~4%. Data from 2.3 million people in Wales show that living near green space lowers the risk of mental disorders (Geary, Lancet Planet Health, 2023).
→ Meaning in life: An individual participant data (IPD) meta-analysis involving 500,000 people found a strong inverse association between a sense of "purpose" and depressive symptoms. A 24% reduction in dementia risk was also found (Sutin, 2025).
→ Being smoke-free: Mendelian randomization shows that smoking increases the risk of depression (OR 1.99) and schizophrenia (OR 2.27). This is a causal relationship, not merely a correlation (Wootton, Psychol Med, 2019).
→ Managing screen time: In a randomized controlled trial (RCT) of a one-week social media detox, depression decreased by 24.8% and anxiety by 16.1% (Calvert, JAMA Network Open, 2025).
You do not need to change everything at once. Starting with one of these today is the first step toward making your nervous system more resilient.
Prevention comes before treatment.