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Cancer
Soy Found To Reduce Hormone Linked To Breast Cancer
Date: 01/11/02
Earlier this year, HSI Members' Alert brought you up-to-the-minute news on the proven health benefits of soy, one of nature's most magnificent foods. We presented the results of a study showing that chemicals present in soy, known as isoflavones, were not only implicated in a lower risk of breast cancer but also a lower risk of prostate and colon cancer.
Now comes further evidence of soy's potential for protecting women against breast cancer - and another reason to boost the soya content of your diet if you haven't already done so. In a recent issue of Cancer Epidemiology, Biomarkers & Prevention, it was claimed that regular consumption of soy-based foods was associated with lower levels of the hormone oestrone.
Oestrone is the form of oestrogen that is predominant following menopause, and which is associated with elevated breast cancer risk.
In Singapore, a group of 144 healthy Chinese women between the ages of 50 and 74, were interviewed in detail about their diet (particularly in relation to 165 specific food items), reproductive history and various lifestyle factors.
Six types of soy foods and one soy drink were included in the food items, and total soy as well as soy isoflavone intake was calculated. Blood samples were then analysed for levels of oestrogens.
Soy emerged as the one dietary factor that was associated with lower levels of oestrone. When isoflavone consumption was examined, high levels were also found to be associated with lower serum oestrone.
The lead investigator and professor of preventive medicine at the Keck School of Medicine at the University of Southern California, Anna H. Wu, said: 'Results from this study support the hypothesis that high soy intake may reduce the risk of breast cancer by lowering endogenous oestrogen levels, particularly oestrone'.
HSI's policy is to urge Members to look at their diet first before supplementing. Fortunately, there are many delicious soy-based foods to choose from - in the form of soy milk, sausages, nuggets and tofu - all available in supermarkets and health food stores.
However, if soy is not to your taste, you may want to consider taking soya isoflavone tablets instead.
Back to topNow comes further evidence of soy's potential for protecting women against breast cancer - and another reason to boost the soya content of your diet if you haven't already done so. In a recent issue of Cancer Epidemiology, Biomarkers & Prevention, it was claimed that regular consumption of soy-based foods was associated with lower levels of the hormone oestrone.
Oestrone is the form of oestrogen that is predominant following menopause, and which is associated with elevated breast cancer risk.
In Singapore, a group of 144 healthy Chinese women between the ages of 50 and 74, were interviewed in detail about their diet (particularly in relation to 165 specific food items), reproductive history and various lifestyle factors.
Six types of soy foods and one soy drink were included in the food items, and total soy as well as soy isoflavone intake was calculated. Blood samples were then analysed for levels of oestrogens.
Soy emerged as the one dietary factor that was associated with lower levels of oestrone. When isoflavone consumption was examined, high levels were also found to be associated with lower serum oestrone.
The lead investigator and professor of preventive medicine at the Keck School of Medicine at the University of Southern California, Anna H. Wu, said: 'Results from this study support the hypothesis that high soy intake may reduce the risk of breast cancer by lowering endogenous oestrogen levels, particularly oestrone'.
HSI's policy is to urge Members to look at their diet first before supplementing. Fortunately, there are many delicious soy-based foods to choose from - in the form of soy milk, sausages, nuggets and tofu - all available in supermarkets and health food stores.
However, if soy is not to your taste, you may want to consider taking soya isoflavone tablets instead.
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