Published: April 1, 2000

The Dairy Dilemma

Over the years, Arkansas principal Alfred Carroll has heard more than a few of his middle school students complain of stomachaches after breakfast or lunch. Carroll always figured many of the kids were scamming him to get out of class. Now, he's not so sure.

Over the years, Arkansas principal Alfred Carroll has heard more than a few of his middle school students complain of stomachaches after breakfast or lunch. Carroll always figured many of the kids were scamming him to get out of class. Now, he's not so sure.

Recent research indicates that many minorities may have difficulty digesting lactose, a natural sugar found in milk. Estimates suggest about 90 percent of Asian Americans are lactose intolerant. The figure is 70 percent for African Americans and Native Americans,...