Scientists once believed that the mind and the body were separate, that one didn’t influence the other. Today we know that isn’t the case. Your stress levels and general mental state can have profound effects on the efficacy of your immune system. Your immune system doesn’t just deal with illnesses…

You depend on your immune system to fight off foreign substances that could make you sick and help you recover if any of them slip through. A healthy lifestyle strengthens your body's defense network so you catch fewer colds and reduce your risk for many serious health conditions. Try these…