A new Japanese study suggests that regularly eating mushrooms could help lower a man’s risk of prostate cancer.
Led by researchers at University School of Public Health, the study looked at a total of 36,499 men between the ages of 40 and 79, and asked them to complete a questionnaire about lifestyle choices such as diet (including mushroom consumption), physical activity, smoking and drinking habits.
The men were also asked to provide information on their education, family and medical history.
After following one group for 24.5 years and another for 13.25 years, the researchers found that those who ate mushrooms once or twice a week had an 8% lower risk of developing prostate cancer – regardless of how much fruit and veg, or meat and dairy products, they ate – compared to those who ate mushrooms less than once a week.
More mushrooms often appeared to bring even bigger benefits, with those who consumed mushrooms three or more times a week showing a 17% lower risk.
Eating mushrooms also appeared to be particularly beneficial among men aged 50 and older, and among those who consumed a large amount of meat and dairy products, and little fruit and vegetables.
The findings, published in the International Journal of Cancer, are the first to suggest that there may be an association between eating mushrooms and prostate cancer, one of the most common forms of cancer affecting men.
“Test-tube studies and studies conducted on living organisms have shown that mushrooms have the potential to prevent prostate cancer,” said lead researcher Dr Zhang Shu.
“However, the relationship between mushroom consumption and prostate cancer in humans has never been investigated before. To the best of our knowledge, this is the first cohort study indicating the prostate cancer-preventive potential of mushrooms at a population level.”
Dr Zhang added that “mushrooms are a good source of vitamins, minerals and antioxidants, especially L-ergothioneine”, believed to help fight against oxidative stress – a cellular imbalance caused by lifestyle choices such as poor diet and exposure to environmental toxins. This imbalance can lead to chronic inflammation, resulting in chronic diseases like cancer.
“Considering the average American consumes less than 5g of mushrooms per day, which is lower than that consumed by the participants in this study (7.6g/day) one would expect that even a small increase in mushroom consumption to offer potential health benefits,” said Dr Zhang.
However, she added that, “Although our study suggests regular consumption of mushrooms may reduce the risk of prostate cancer, we also want to emphasise that eating a healthy and balanced diet is much more important than filling your shopping basket with mushrooms.” – AFP Relaxnews
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