Some causative factors
- Cadmium toxicity
- Deficiency of plant foods rich in carotenes and isoflavones
- Selenium deficiency
- Zinc deficiency.
In a study on 47,894 subjects it was found that higher intakes of foods rich in the carotenoid lycopene (mainly tomato products) were associated with lower rates of prostate cancer. J Natl Cancer Inst 87(23):1767-76, 1995.
Isoflavonoid (plant oestrogen) levels in blood samples were compared in Japanese and Finnish men. Levels were 7-110 times higher in the Japanese men. since isoflavones, which are found in soya products, inhibit the growth of several types of hormone-dependent cancer cells, the authors conclude that a life-long high intake of soya products may explain why prostate cancer is rare in Japanese men. Lancet 342:1209-10, 1993.
While cadmium stimulates prostate growth, selenium inhibits this effect of cadmium. Webber MM: Selenium prevents the growth stimulatory effects of cadmium on human prostatic epithelium. Biochem Biophys Res Commun 127(3):871-7, 1985.
Promising nutritional research
A study conducted at the University of Illinois has found that consuming broccoli and tomatoes together slows prostate tumour growth more effectively than consuming either one alone . Canene-Adams K, Lindshield BL, Wang S. Combinations of tomato and broccoli enhance antitumor activity in dunning r3327-h prostate adenocarcinomas. Cancer Res. 15;67(2):836-43, 2007.
Information compiled by Linda Lazarides
Naturopathic Nutritionist, Author, Educator