Enzymes are biological catalysts which speed up reactions including digestion. VOICEOVER: Enzymes of the digestive system ... put into a higher or lower pH, their shape can change.

Enzymes are biological catalysts which speed up reactions including digestion. VOICEOVER: Enzymes of the digestive system ... put into a higher or lower pH, their shape can change.

Humans produce over one thousand enzymes every day and they are essential for almost all bodily functions ... tolerate dairy ...