Exercise Is Emerging as a Powerful Treatment For Depression

Exercise used as a treatment for depression may deliver benefits comparable to talking therapies or antidepressant medication, according to a fresh synthesis of earlier clinical trials, and could provide a cheaper, more personalised route to better mental health.

Evidence from 73 trials of exercise for depression

Researchers led by the University of Lancashire in the UK reviewed 73 randomised, controlled trials, together including almost 5,000 adults. Across these studies, participants followed a wide range of exercise programmes and received different approaches to depression care.

Taken as a whole, the evidence indicates that exercise can reduce depressive symptoms, aligning with conclusions drawn in several previous lines of research.

How exercise compared with therapy and antidepressants

When results from all trials were pooled, exercise produced a moderate improvement versus receiving no treatment. Its overall effect was broadly similar to psychological therapy, and also comparable to antidepressants, although the certainty around the antidepressant comparison was lower.

Differences by intensity, type and adherence

The review also found that outcomes were not uniform: responses differed between people and between exercise formats.

Light to moderate activity appeared more helpful for easing depression symptoms than higher-intensity exercise. A total of between 13 and 36 sessions seemed to represent a ‘sweet spot’, although none of the included trials followed people for a long time to see how depression and exercise patterns changed over extended periods.

There were indications that mixing exercise types might be advantageous, but no single form of activity clearly outperformed the others. For exercise to be effective, programmes would likely need adapting to individuals’ circumstances and preferences.

"Our findings suggest that exercise appears to be a safe and accessible option for helping to manage symptoms of depression," says Andrew Clegg, a professor of Health Services Research at the University of Lancashire.

"This suggests that exercise works well for some people, but not for everyone, and finding approaches that individuals are willing and able to maintain is important."

Expert perspective and practical decision-making

"For people with depression, the evidence indicates that exercise may offer similar short-term benefits to therapy or medication for some," says neuroscientist Brendon Stubbs, from King's College London, who wasn't involved in the research.

"Decisions on switching or combining approaches should be made collaboratively with healthcare providers, considering individual circumstances."

Limits of the current evidence and what still needs studying

The authors largely drew on structured trial evidence. While this design supports thorough and consistent data collection, such studies can disproportionately recruit people who are already more motivated and physically active.

The researchers note that further work is needed to examine varying severities of depression, a broader range of exercise approaches, and people with different prior habits and attitudes towards fitness.

It also remains important to seek professional support for depression where possible, as depressive symptoms can sometimes stem from other underlying conditions, ranging from vitamin D deficiency to autism.

Beyond mental health, exercise is known to offer many additional advantages, including supporting brain function, helping to prevent disease, and reducing weight gain.

"Exercise can help people with depression, but if we want to find which types work best, for whom, and whether the benefits last over time, we still need larger, high-quality studies," says Clegg.

"One large, well-conducted trial is much better than numerous poor-quality small trials with limited numbers of participants in each."

The research has been published in the Cochrane Database of Systematic Reviews.