Testosterone isn’t something most men need to think about in their 20s. That’s the luxury of youth. The majority of young men have sufficient levels. As you get older, however, levels begin to fall and the risk of low T rises. The more well-known symptoms of low T include erectile dysfunction, decreased muscle mass, and increased body fat. But it’s also connected to a variety of other issues, including depression and heart problems.

If you’re feeling good, you probably don’t have to worry about low T. But if you have some nagging symptoms, it may be worth having a conversation with your doctor — and sticking to some healthy habits that can keep your testosterone levels from declining. Proactivity goes a long way.