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Brain preserved in formaldehyde. — Gaetan Lee (CC BY 2.0) Brain preserved in formaldehyde. — Gaetan Lee (CC BY 2.0) Scientists have discovered a brain “pain switch” that prioritises survival needs ...

Scientists are closing in on the brain’s internal circuitry for hunger, revealing a surprisingly precise “off switch” that can shut down cravings in real time. Instead of a single magic button, they ...

EDITOR’S NOTE: Chief Medical Correspondent Dr. Sanjay Gupta’s new book, “It Doesn’t Have to Hurt,” is available now. Watch “Dr. Sanjay Gupta Reports: It Doesn’t Have to Hurt.” at 9 p.m. ET on ...