Exercise and the Brain: BDNF, Mood, and Cognition
Regular physical activity is one of the most robust non-pharmacological supports for mental wellness.
This page has been written and edited by the publisher. It has not been reviewed by a licensed clinician.
- • Exercise reliably supports mood and cognition.
- • Consistency matters more than intensity.
- • It complements - does not replace - clinical care when needed.
Mechanisms
Exercise increases BDNF, supports neurogenesis in the hippocampus, improves cerebral blood flow, and modulates HPA-axis function. It also has acute effects on mood via endorphins and endocannabinoids.
Evidence
Meta-analyses show moderate antidepressant effects of regular aerobic exercise, with effect sizes comparable to some pharmacological options in mild-to-moderate depression.
Dose
Roughly 150 minutes per week of moderate aerobic activity, or 75 minutes of vigorous activity, is a reasonable baseline. Resistance training adds additional benefit.
Practical note
Consistency outperforms intensity. A 20-minute walk most days outperforms a punishing weekend session.
Educational only. Not medical advice. Discuss treatment decisions with a qualified clinician.
Publisher and editor of Ketalux, based in Chicago, Illinois. Ira is a ketamine therapy patient, not a clinician. This is editorial review, not medical review: Ira is not a licensed clinician and does not provide diagnosis or medical care. Ketalux does not accept compensation from providers in exchange for favorable editorial coverage, evidence ratings, recommendations, patient referrals, or organic provider ranking. Read the full publisher disclosure →
Educational use only. The content on this page is provided for general educational purposes and does not constitute medical advice, diagnosis, or treatment. Ketamine and related therapies carry risks and are appropriate only under qualified medical supervision. Always consult a licensed healthcare professional about your individual situation. Information may change as research evolves.