BDNF

Brain-Derived Neurotrophic Factor

BDNF (Brain-Derived Neurotrophic Factor) is a protein that acts like fertilizer for your brain—it promotes the growth of new neurons, strengthens existing connections, and protects brain cells from damage. Low BDNF levels are linked to depression, cognitive decline, and neurodegenerative diseases. Interestingly, fasting, ketosis, and exercise all boost BDNF production, which may explain some of the cognitive benefits people experience with low-carb lifestyles and intermittent fasting.