Three nutrients may reduce prostate cancer risk
Three nutrients may reduce prostate cancer risk
27 Aug 2014
New research suggests that men who eat over 10 portions of tomatoes per week have an 18% lower risk of developing prostate cancer. Other nutrients that help reduce risk include selenium and calcium.
Study on men aged 50 to 69
To assess if following dietary and lifestyle recommendations reduces risk of prostate cancer, researchers at the Universities of Bristol, Cambridge and Oxford looked at the diets and lifestyle of 1,806 men aged between 50 and 69 with prostate cancer and compared with 12,005 cancer-free men.
The study, published in the medical journal Cancer Epidemiology, Biomarkers and Prevention, is the first study of its kind to develop a prostate cancer 'dietary index' which consists of dietary components (selenium, calcium and foods rich in lycopene) that have been linked to prostate cancer.
Men who had optimal intake of these three dietary components had a lower risk of prostate cancer.
Tomatoes and its products (such as tomato juice and baked beans) were shown to be most beneficial, with an 18% reduction in risk found in men eating over 10 portions a week.
This is thought to be due to lycopene, an antioxidant which fights off toxins that can cause DNA and cell damage.
Research leader: "Further studies needed to confirm the findings"
Vanessa Er, from the School of Social and Community Medicine at the University of Bristol and Bristol Nutrition BRU, led the research.
She said: "Our findings suggest that tomatoes may be important in prostate cancer prevention. However, further studies need to be conducted to confirm our findings, especially through human trials. Men should still eat a wide variety of fruits and vegetables, maintain a healthy weight and stay active."
The researchers also looked at the recommendations on physical activity, diet and body weight for cancer prevention published by the World Cancer Research Fund (WCRF) and the American Institute for Cancer Research (AICR).
Only the recommendation on plant foods (high intake of fruits, vegetables and dietary fiber) was found to be associated with a reduced risk of prostate cancer. As these recommendations are not targeted at prostate cancer prevention, researchers concluded that adhering to these recommendations is not sufficient and that additional dietary recommendations should be developed.
Source: Science Daily