Low Testosterone Sufferers Now Have Natural Alternatives Forty per cent of men over age 45 suffer from low testosterone (low t) but less than 5 per cent are diagnosed and treated for it, according to Dr. Richard Bebb, a Vancouver endocrinologist writing in the B.C. Medical Journal. This condition not only negatively impacts male libido, it causes low energy and fatigue, decreased concentration, increased body fat, mood changes, including increased sadness, and even height loss. in Public bookmarkswith andropauseincreaselowmalemenopausetestosterone