“There are so many crazy stories going around,” she says. Can soy affect menstruation? Is it true tofu gives you Alzheimer’s?” Last week, she says, a girl asked, “I really want to use soy but how do you handle the hair loss thing?” Grogan is 60. “I’m getting the same questions over and over again,” she says, questions like, “I read that soy kills sperm. Bryanna Clark Grogan makes her own soy milk at home. Does it boost brain power or cause dementia? Does it fight cancer or shrink penises? Should boys drink it or will it turn them gay?Ī vegan cookbook author on B.C.’s Denman Island is so fed up assuaging fears she’s using her website to post people’s panic-filled questions along with links to scientific papers. Now the protein-rich legume is provoking raging debates. The soybean, used in making tofu, soy sauce and soy milk, was once viewed as a “superfood,” says soy expert Dr. A three-inch-long green bean is polarizing health food advocates and terrorizing North American consumers.