Your digestive system has more going on inside of it than you may realize. There are literally trillions of bacteria that live mostly in the lower parts of your intestines—the colon. These bacteria establish a “city” of sorts with many different “neighborhoods” of friendly (healthy) and non–friendly (harmful) bacteria types. Your immune health depends upon the friendly bacteria out–numbering the non– friendly neighbors. Scientists view the intestinal track as the first line of defense against illness, so maintaining ample friendly bacteria ultimately keeps you well. Stress, poor sleep, sporadic eating or poor dietary choices can each disrupt the balance of friendly versus non–friendly bacteria. Take these simple steps to promote healthy bacteria in your intestines and a strong immune system.