For years we’ve fought the concept that we’re inheriting bad genes, especially for breast cancer-prone families. We maintained that what these women were inheriting was bad habits and family cookbooks. Though we have accepted that we inherit high-risk genetic traits, because of these findings we feel partially vindicated; what’s passed on to us are un-mutated genes, epigenetically altered by our ancestors’ habits.
Normally we do adopt, implement, and pass these on—but we can change all that! Even if our destiny were written in our DNA, we can rewrite it by espousing diet, lifestyle, and environmental changes to switch on genes that promote health and switch off genes that lead to diseases.
One way in which we strive to suppress tumor growth is by decreasing blood levels of certain pro-growth hormones, such as insulin, free IGF-I, and free estrogen, that promote increased growth and survival of many types of cancer cells.