Digestion

Digestion is the breakdown of large insoluble food molecules into small water-soluble food molecules so that they can be absorbed into the watery blood plasma.

Adjustable Gastric Banding Surgery

Looks at adjustable gastric banding surgery (also called gastric banding), a type of weight-loss surgery used to treat obesity. Explains what it is and why it is done. Looks at how it is done and what to expect after surgery. Also covers risks.

Alanine Aminotransferase (ALT)

An alanine aminotransferase (ALT) test measures the amount of this enzyme in the blood. ALT is found mainly in the liver, but also in smaller amounts in the kidneys , heart, muscles, and pancreas . ALT was formerly called serum glutamic pyruvic transaminase (SGPT). ALT is measured to see if the liver is damaged or…

Alkaline Phosphatase

An alkaline phosphatase (ALP) test measures the amount of the enzyme ALP in the blood. ALP is made mostly in the liver and in bone with some made in the intestines and kidneys . It also is made by the placenta of a pregnant woman. The liver makes more ALP than the other organs or the bones. Some conditions cause large…