Digestion Facts | Facts about Digestions

What does bile do?

The liver makes bile, which helps digest fat.

The stomach lining is constantly replaced to protect it from its own acid.

Stomach acid has a pH of about 1 to 2.

Food takes about 24 to 72 hours to move through the digestive tract.

Doctor William Beaumont studied digestion through a permanent hole in patient Alexis St. Martin's stomach in the 1820s.