Researchers hope to determine if link exists between high-fat diet, breast cancer.

Ontario researchers hope a major study will determine conclusively if a link exists between high-fat diets and breast cancer. The study will involve about 4700 women in 4 centres. Some researchers think there is a link because the incidence for the disease is much higher in North America and northern Europe, where high-fat diets are common, than in Japan, where low-fat diets prevail. "At some point between now and 2005 we'll definitely know [the answer]," says Dr. Norman Boyd, the principal investigator.