The BBC posted about a new study today that found a correlation between low testosterone in men over 50, and the cluster of conditions known as metabolic syndrome (high blood sugar, high cholesterol, and high blood pressure). I wonder if the 33% higher death rate associated with low testosterone could be related to inactivity and poor diet that results in metabolic syndrome. In the article, men are advised to "stay active" in order to prevent low testosterone. "Keeping a good body shape will help maintain your testosterone levels." The study also indicated that testosterone levels in men of all ages are decreasing.
http://news.bbc.co.uk/2/hi/health/6723723.stm