Grapefruit + Medications = Potential Problem

We Americans are often told to eat more fruits and vegetables. Particularly this time of year, when New Year’s resolutions are still in strong force, a lot of us are trying to do better about what we eat. A breakfast of half a grapefruit and some peanut butter on a piece of toast sounds like it would be good for you, doesn’t it?

For millions of Americans who take prescription drugs, the answer may be no – such a breakfast might even be quite problematic for your health.

The difficulty arises because of certain effects in the compounds found in grapefruit and some other citrus fruits. When you...