There is still no ideal cancer-fighting diet, but the latest research uncovers the benefits of some interesting compounds in everyday foods. Studies suggest that vitamin A, or retinoids, which are found in carrots, cantaloupe and spinach, as well as in egg yolks and milk, may actually slow the growth of cancer cells. And since some breast cancers are fueled by the hormone estrogen, anti-estrogen compounds like flaxseed, rich in omega-3 oils, may also retard certain forms of the disease.