Running fixes what junk food breaks in the brain

New research reveals that exercise counteracts the mood-damaging effects of a Western-style diet through specific gut and hormonal mechanisms. Running restored metabolites tied to mental well-being and balanced key hormones like insulin and leptin. However, poor diet limited the brain’s ability to generate new neurons, showing diet still matters for full brain benefits.

source https://www.sciencedaily.com/releases/2025/10/251021083638.htm