Does your immune system cause you a lot of trouble on an everyday basis? Are you forced to take a day off from work quite often because of ill health? If yes, you sure have a weak immune system. There could be plenty of reasons that could kill your immune system, and it becomes important to diagnose the exact cause, only then can you find the right treatment. Having a vigorous immune system helps to defend the body against various kinds of harmful diseases and so it is important that you take proper care of your immunity and avoid things that can damage it. If you thought it was only serious neglect to health that lead to weaker immunity, check out these 7 silly things that kill your immune system, and you’ll know, how valuable are even the smallest changes in our lifestyle.