You must have heard about Testosterone Boosters. If you are thinking about what they all mean, then you need to know that testosterone levels in men start to decrease when they age older. Earlier, people used to think that testosterone levels decrease only when people age and it is the only factor that is responsible for it. But nowadays when we hear about it, then it is not the only factor that is responsible for the decline in the testosterone level. There are other reasons also which can affect it. In our daily life due to our unhealthy lifestyle, people are getting a lot of health issues.