Brain Teaser

Challenge Your Cognitive Know-How!

Staying Sharp

Published January 29, 2026

Fasting promotes production of which beneficial brain chemical?

Vitamin K

Melatonin

BDNF

Serotonin

When you fast, your brain ramps up production of a protein called brain-derived neurotrophic factor (BDNF). BDNF supports brain cell function in the hippocampus, the brain region that is the seat of memory and learning. Get the full story about fasting and brain health here.

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Brain Teaser

Challenge Your Cognitive Know-How!

Fasting promotes production of which beneficial brain chemical?

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MS15

Brain Teaser

Challenge Your Cognitive Know-How!

Fasting promotes production of which beneficial brain chemical?

AARP VALUE & MEMBER BENEFITS

Staying Sharp

AARP VALUE &
MEMBER BENEFITS