Dr. Mehmet Oz discusses vision in this clip from Discovery Health's "Truth About Food." Learn about lutein, a nutrient in spinach that can help keep people from going blind.
WHAT'S INSIDE: HUMAN BODY
- Body Parts
- Body Systems
Do men and women have different brains? How do blood clots affect the brain? School yourself on the amazing organ sitting right between your ears.
Creatinine is a chemical molecule that is present in the serum (liquid portion) of the blood. The amount of creatinine produced depends on a person's muscle mass. But how is it measured?