Dehydration Shrinks Your Brain and Decision-Making

Scientists just discovered that your brain literally shrinks when you're dehydrated,

and it affects your decision-making within hours. Researchers scanned people before and

after mild dehydration and found the brain tissue actually contracts, making you worse

at planning and problem-solving. The wild part? You don't even feel thirsty when this

happens. Your brain is already compromised before your body sends the signal.

They tested this on people doing everyday tasks and found dehydrated participants made

significantly more impulsive choices, like picking immediate rewards over better long-term options.

The fix is almost instant though. Drinking water restored brain volume and cognitive function