It’s no surprise that Dr. Neal Barnard believes chocolate is addictive, since milk chocolate is the most popular American variety (“Chocolate’s dark little secret,” Metropolitan, March 22). Dr. Barnard, a career animal-rights activist who is president of both the PETA Foundation and the misnamed Physicians Committee for Responsible Medicine, has also concocted the idea that meat and milk are addictive, comparing them to heroin. At a recent FDA hearing, Dr. Barnard referred to milk as a “drug,” and even called cheese “morphine on a cracker” and “dairy crack.”

When Americans start holding up convenience stores to get their next cocoa “fix,” Dr. Barnard’s crazy addiction theories about dairy foods might merit a second look. Until then, they’re just the rantings of an animal-rights activist.