It is better to eat a balanced, natural diet, than to take pills, which contain an extract. I always tell my patients that nothing natural comes in a pill, and it is better to incorporate beneficial foods into your diet.
But, if you do take them, it is important to inform your physician about any supplements. You may need to stop them before a surgical procedure, as they may interfere with the normal clotting process, and cause bleeding.
Which foods are good for cancer risk?
Mushrooms, it turns out. A number of them, including shitake and white button mushrooms have been shown to have beneficial effect, when used in addition to conventional chemotherapy.
Turmeric has shown to increase cancer cell death in laboratory experiments, and in animal models. It has shown cancer preventive properties. Unfortunately, as used as a food additive, it has very little gastrointestinal absorption, and very little oral bioavailability. It is likely that the Indian style of cooking with turmeric, tempering it in hot oil extracts the active principles, making the medicinal chemical more available for absorption.
Green tea may decrease progression of pre cancer cells to prostate cancer. It may also have activity against the HPV virus in cervical dysplasia, and may enhance the anticancer activity of some chemotherapy drugs (adriamycin). However, it may activity of other anticancer drug activity in other cancer cell lines (Bortezomib, in multiple myeloma cells).
Omega 3 Fatty acids (found in fish) have laboratory evidence of decreasing cancer cell proliferation, and improving chemotherapy activity. They have been shown to increase drug accumulation in some cancer cells.
Lycopene (found in tomatoes) can delay or prevent progression to prostate cancer. It may eventually be used in preparation for a radical prostatectomy, to shrink prostate tissue.
Vitamin D (with Calcium) supplementation in postmenopausal women has shown decreased cancer risk of any kind. Another study has shown that higher Vitamin D levels have been shown to be associated with decreased cancer risk and cancer mortality. We have to keep in mind that these studies were done in mostly cold weather countries, where sun exposure is limited for half the year, and the body’s Vitamin D production is sub optimal. We don’t know whether there is a universal deficiency in Vitamin D, and whether supplementation is necessary in all populations.
Calcium supplementation (with Vitamin D) helps reduce recurrence of colon polyps, which would eventually turn in colon cancer.