A cardiologist has warned that modern wheat is a "perfect, chronic poison".
Dr. William Davis, a cardiologist who has published a book all about the world's most popular grain, said that the wheat we eat these days isn't the wheat your grandma had.
"It's an 18-inch tall plant created by genetic research in the '60s and '70s," he said on "CBS This Morning."
To avoid these wheat-oriented products, Davis suggests eating "real food," such as avocados, olives, olive oil, meats, and vegetables.
"(It's) the stuff that is least likely to have been changed by agribusiness," he said.
"Certainly not grains. When I say grains, of course, over 90 percent of all grains we eat will be wheat, it's not barley... or flax. It's going to be wheat.
"It's really a wheat issue," he added.