Sam was an avid eater of greasy, cheesy pizza until her early 20s. Now, dairy has her running to the bathroom (tmi). Why is that the case for so many people all over the world? In this week’s episode ...

Lactose intolerance, often seen as a simple enzyme deficiency, may have a new explanation. Scientists are exploring how the ...

Lactose intolerance is a common digestive order that affects millions of people worldwide. It is caused by the body’s inability to produce enough lactase enzymes to break down lactose found in milk ...