4. No Sugar Added
Another way to stay healthy and stay trim is to go easy on the sugar. Sugar also affects white blood cells and inhibits their ability to kill germs by up to 40%! The immune-suppressing effects of sugar start within 30 minutes of consumption and can last up to 4-5 hours. If you have a sweet tooth, try swapping sugar snacks for fresh fruit, veggies or whole grains, which don’t affect the immune system at all!