Taking too many antibiotics could be the reason why you are gaining weight, feel depressed, have arthritis, allergies or even can't sleep at night. You might need an antibiotic for some disease, but not for chronic diseases (cancer, diabetes, obesity, heart conditions). Every time you take an antibiotic, the good bacteria that lives in your gut dies. This has many negative implications. One of them is the overgrowth of the Candida fungus, which lived under control when your body had the good bacteria in charge, before the antibiotic. As any functional doctor can tell you, like Dr. Mark Hyman states in his book, "The Ultra Mind Solution", when you eat fresh fruits and vegetables instead of sugars and processed foods, you can be healthier, feeling more alert and moving better. As Ann Boroch states in her book, "The Candida Cure", Candida can attack any tissue or organ, but primarily nerves and muscles, possibly leading to a chronic disease. There are various natural ways of improving your immune system, including many herbs, exercises, and organic, non-GMO foods. If you are suffering from a chronic disease, make some minor changes, one at a time. Listen to your body, it will tell you what feels good. Before taking that antibiotic, be certain there is no other alternative.