A man's choices in what to eat, whether to take supplements, and how much to exercise can affect his entire body -- right down to his prostate. Recent studies suggest that a healthy lifestyle can help reduce the risk of prostate cancer, a disease that strikes roughly 200,000 men each year. Simple self-help measures can also help control the symptoms of an enlarged prostate, one of the most common maladies of old age. How much do you know about keeping your prostate healthy? Take this short quiz to find out.