It's natural for men to notice a gradual decrease in sex drive libido as they age. The degree of this decline varies, but most men maintain at least some amount of sexual interest well into their 60s and 70s. Sometimes, however, loss of sex drive is related to an underlying condition. Depression and stress often contribute to loss of sex drive in men.
Men lose interest in sex during long-term relationships before women, study finds
However, low libido for a long period of time may cause concern for some people. It can sometimes be an indicator of an underlying health condition. Testosterone is an important male hormone.
Every relationship can go through dry spells when your partner is suddenly less interested in sex than you. It may a short-term problem related to stress at work or other issues that have driven your partner to distraction. Even more commonly, a sudden, hectic schedule—ranging from end-of-year exams to a do-or-die work deadline—can leave your partner exhausted and uninterested in anything more than sleep or a night in front of the TV. While dry spells like these are common and usually resolve on their own once things stabilize, a prolonged and unexplained disinterest in sex can be harmful to a relationship and the general well-being of both partners.