Our first defense against diseases and infections is our immune system. For seniors concerned about their health finding a way to boost their immune systems naturally would be very beneficial. A number of foods supply a compound that provides a natural immune system boost. Cereal grains such as barley, rye, oats, and wheat contain this compound as does baker’s yeast and shiitake mushrooms. The compound is beta glucans and we have to get it from outside sources, because our body does not make it. Extensive research has shown that beta glucans make the immune system more efficient. The beta glucans stimulate the two important defenders of the immune system including the immune cells called macrophages that attack invading pathogens and the lethal white blood cells the destroy tumors and viruses.
In one study the beta glucans from oats was used to test the efficacy of lowering cholesterol. The study showed significant reductions in total cholesterol and low density lipoprotein. The folks who had received the higher amount of beta glucans achieved greater reductions in the total cholesterol and low density lipoprotein. In several other studies the beta glucans were used successfully to prevent or mitigate the duration of upper respiratory infections. Finally, beta glucans have been used in Japan to reduce tumor activity in cancer. The particular beta glucan was found in shiitake mushrooms has been used as an immune system stimulant against cancer in Japan since the 1980s.