Mental Floss

THE BODY

Love your liver.

Not only is the liver your largest internal organ; it is in charge of hundreds of bodily processes ranging from fighting infection to manufacturing proteins and hormones to helping your blood clot.

Jordan Rosenfeld


The pineal gland is located in the center of the brain.

René Descartes once described the pineal gland as “the principal seat of the soul.” Medical knowledge has vastly progressed since his time, though. Here’s what we know about this critical organ.

Jordan Rosenfeld


A doctor checks a young girl for swollen tonsils.

You might think they’re unnecessary, because so many people have had their tonsils removed—but tonsils actually serve an important role in your immune system.

Jordan Rosenfeld




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










Land Sickness can be just as unsettling as seasickness.

Seasickness happens when a person’s body struggles to grow accustomed to a boat’s motion patterns, causing them to feel unsteady and often nauseated. But land sickness happens in reverse.

Mary Beth Skylis




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Thanks to binding her ribs in tight corsets, Guinness World Record holder Cathie Jung has a waist that is the same circumference as a jar of mayonnaise.

Jordan Rosenfeld