Brian Austin Green is keeping it real when it comes to sex and aging. “‘As men age, do you notice that your sex drive is lowering?’ Sure, absolutely, of course,” Green, 53, shared on the Saturday, August 29, episode of iHeartRadio’s “I Do, Part 2” podcast when responding to a listener’s email question. “That is a chemical thing. That is testosterone. That is what men, as they age, start naturally losing.” Although the former Beverly Hills, 90210 actor suggested that men can take supplements in order to “go the opposite direction,” he answered the listener’s question with hi...