Soy components and cancer protection

Animal and test tube studies have also shown that soy protein containing foods or soy isoflavones* can protect against the development of cancers ² . Isoflavones inhibit the action of key enzymes and growth factors required for cancer cell growth ² , ¹⁵ , ¹⁶ .

Although isoflavones have been the primary focus, researchers have identified further components of soy that could also act as anti-carcinogens. These include phytic acid, trypsin inhibitors and saponins ¹⁷ . These natural phytochemicals are also found widely in other plant foods such as wholegrains and, or nuts, although legumes tend to contain higher levels.