Experts Advocate for Structured Exercise Prescriptions to Improve Brain Health
Medical professionals suggest that physical activity should be treated as a targeted clinical intervention to enhance cognitive function and mental well-being.
A growing body of research suggests that physical activity should be formally integrated into clinical practice as a structured, personalized treatment rather than a generic lifestyle recommendation. According to a recent article published in the journal Brain Health, researchers from the University of Ottawa and the University of Toronto argue that exercise is a critical component of brain health, comparable to medication, psychotherapy, and sleep management.
The authors emphasize that exercise influences the brain through complex biological pathways, including the 'muscle-brain axis.' During physical exertion, muscles release proteins known as myokines, such as brain-derived neurotrophic factor (BDNF). This molecule acts as a biological fertilizer for the brain, supporting neuroplasticity, memory, and the protection of neurons. These physiological changes can positively impact mood, cognition, and social functioning.
Gregory Saraiva Medeiros, head of the Adult Intensive Care Service at Hospital Moinhos de Vento, notes that while the benefits of exercise are well-established in the medical community, the current approach to patient guidance often lacks the necessary precision. Medeiros suggests that moving toward a model where exercise is prescribed with clear instructions, frequency, and monitoring could significantly improve patient outcomes.
Recent studies further support the link between physical activity and structural brain health in older adults. A systematic review published in the Journal of Aging and Physical Activity, which analyzed data from nearly 2,700 individuals over the age of 60, found a consistent association between higher levels of daily movement and increased brain volume. Specifically, active seniors showed greater volume in regions critical for memory and cognition, such as the hippocampus.
Beyond structural benefits, exercise serves as a powerful tool for mental health. Research indicates that activities ranging from walking and yoga to strength training can reduce symptoms of depression and anxiety. Even for those unable to meet the World Health Organization's standard recommendation of 150 to 300 minutes of moderate activity per week, studies suggest that smaller doses—such as 75 minutes of moderate activity—can still provide meaningful health benefits.
To be effective, experts argue that exercise prescriptions must be individualized. A comprehensive plan should account for a patient’s initial fitness level, existing medical conditions, and personal preferences. For individuals facing barriers such as chronic pain, lack of motivation, or social isolation, clinicians recommend a gradual approach, starting with low-impact activities like short walks or supervised group sessions to build consistent habits.
The researchers also highlight that addressing health equity is essential when prescribing exercise. They suggest that healthcare systems should collaborate with community programs and provide support for transportation to ensure that patients from all backgrounds can access the necessary resources. By integrating these practices into routine care, medical providers can better utilize physical activity as a preventive and therapeutic ally in the management of brain-related disorders.