When your energy fades, your drive drops, or your body feels different than it used to, it’s a sign that it’s time to pause and dig into what may be causing the concern. For an increasing number of men, the source of these kinds of changes is often a result of hormonal issues. Part of the issue is lifestyle factors, according to Rahul Iyengar, MD, medical director for MIORA at Life Time in Franklin, Tenn.