|Prostate exams are actually not this bad...as long as you don't ask a bull to do it.|
However, epidemiological studies of coffee consumption and prostate cancer have generally reported null results, although most lacked a wide range of coffee intakes and a large number of case subjects and none specifically examined advanced disease.
Therefore, the authors of this new study sought to avoid the pitfalls of previous studies, and hypothesized that coffee may be associated with lower risk of more advanced prostate cancers because the associations of insulin, antioxidants, and androgens.
They conducted a prospective analysis of 47,911 men in the Health Professionals Follow-up Study who reported intake of regular and decaffeinated coffee in 1986 and every 4 years thereafter. .
The average intake of coffee in 1986 was 1.9 cups per day. Men who consumed six or more cups per day had a lower relative risk for overall prostate cancer compared with nondrinkers, and this association was stronger for lethal prostate cancer.
The inverse association with lethal cancer was similar for regular and decaffeinated coffee (indicating it isn't the caffeine that offers the protective benefits, which was the case in another study on coffee for Alzheimer's disease I covered in the past).
Source: Coffee Consumption and Prostate Cancer Risk and Progression in the Health Professionals Follow-up Study
For further reading, here are some other studies I've covered on coffee:
- potentially inhibiting some breast cancers
- protecting DNA from free-radical damage and assisting in weight loss
- reducing the risk of brain tumours (many studies covered in this post... you'll find this study about halfway down)
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