BDNF Gene: Brain-Derived Neurotrophic Factor

The BDNF gene produces brain-derived neurotrophic factor, a protein essential for brain health. BDNF supports neuron survival, encourages new neuron growth, and strengthens connections between brain cells. It's often called 'fertilizer for the brain.'

What Does the BDNF Gene Do?

BDNF promotes neuroplasticity—the brain's ability to form new connections and adapt. It's crucial for learning, memory formation, and mood regulation. BDNF levels naturally decline with age but can be increased through lifestyle factors.

Key BDNF Variants

rs6265 (Val66Met): The Met allele reduces activity-dependent BDNF secretion. About 30% of people carry at least one Met allele. Associated with differences in memory, anxiety, and depression risk.

Health Impacts

• Memory and learning capacity
• Mood regulation and depression risk
• Anxiety and stress response
• Recovery from brain injury
• Cognitive aging trajectory

Evidence-Based Recommendations

• Exercise powerfully increases BDNF (especially aerobic + HIIT)
• Intermittent fasting may boost BDNF
• Omega-3 fatty acids support BDNF signaling
• Quality sleep is essential for BDNF production
• Social connection and learning new skills stimulate BDNF

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