Lactose intolerance is the inability to digest a sugar called lactose that's found mainly in milk and dairy products.

Normally, the small intestine produces an enzyme called lactase, which breaks down lactose into two simple sugars (galactose and glucose) so it can be absorbed into the bloodstream. People whose bodies don't make enough lactase can't fully digest lactose, causing mild to severe side effects within 30 minutes to two hours of eating dairy.

About 75% of the world's population is lactose intolerant. The condition is more common among people of African descent, Hispanics, Asians and Native Americans than among those of Northern European descent. It also affects adults more than children, since the body produces less lactase enzyme as people age.

What Are Some Long-Term Consequences Of Lactose Intolerance?

The most common long-term health consequence of lactose intolerance is an inadequate intake of calcium and vitamin D, which can lead to osteoporosis later in life. Fortunately, LACTAID^® Milk is rich in calcium and vitamin D. You can also take calcium and vitamin D supplements to help get the recommended daily allowance.