Sugar Hampers your Immune System

Eating or drinking 100 grams (8 tbsp.) of sugar, the equivalent of one 12-ounce can of soda, can reduce the ability of white blood cells to kill germs by 40%. The immune-suppressing effect of sugar starts less than thirty minutes after ingestion and may last for five hours. In contrast, the ingestion of complex carbohydrates, or starches, has no effect on the immune system.