Mental Floss

HEALTH

Foot pain and sprained ankles are just a few of the common problems affecting our ill-adapted feet.

From back injuries to difficult childbirth, here are six annoying parts of being human that you can blame on evolution.

Megan Gannon








Nitrous oxide (also known as laughing gas) is a common anesthetic that only requires a mask over the mouth and nose.

Anesthesia is a complex mixture of medications that lessen pain during procedures. Different types affect the body in different ways.

CaLea Johnson