WEST LAFAYETTE, Ind. -- Many people who claim to be lactose intolerant really aren't, says Dennis Savaiano, dean of Purdue University's School of Consumer and Family Sciences. The problem, Savaiano ...

I recently learnt that I am lactose-intolerant. Do I need to avoid all dairy or are some products safe to eat? Some 30 million to 50 million people in the United States have lactose intolerance.

Lactose intolerance affects 70% of the global population, causing symptoms like bloating and diarrhea due to insufficient lactase enzyme. While genetic intolerance is incurable, temporary cases ...