How to Keep a Healthy Immune System
Keeping your immune system healthy is important if you want to avoid getting sick often. Staying hydrated and eating balanced meals with plenty of fruits and vegetables are good ways to keep your immune system strong.
When your body is stressed, it releases the hormone cortisol, which suppresses your immune system. To avoid stress, it is best to relax on a daily basis. Exercise can lower your stress levels and boost your immune system. At least 7 hours of sleep every night is also beneficial to your immune system, whereas less than 5 hours of sleep can weaken it.
Prepare your immune system for attack through immunizations, commonly called vaccines. When you are immunized, your body is presented with a mild form of the antigen, which allows your body to produce antibodies to it without suffering the full effects of the disease. This way, if the “wild," fully live form of the antigen were to enter your body, your B cells have antibodies at-the-ready to defeat it.
Alcohol and drug use, as well as too much sun exposure, can weaken your immune system. Be sure to wear sunscreen if you plan to spend an extended period of time outside.