Recent research confirms what people in some parts of the world have known for centuries: beneficial bacteria in our intestinal tract is essential to good health. In a healthy digestive tract, 85% of the bacteria should be beneficial lactic acid bacteria. A healthy digestive system has been shown to be essential to a healthy immune system. Bacterial imbalance in the digestive tract weakens the immune system, and some recent reports suggest that 80% of all degenerative diseases are due to such bacterial imbalance. Yoghurt and kefir are known to be sources of beneficial lactic acid bacteria, as are sourkraut, onions and garlic. But our nutrition is very unlikely to provide enough beneficial bacteria. This is where probiotic supplements come in, like the one formulated by Dr. Ohhira from Japan. A probiotic supplement could be the most important pill you should be taking every day. This is especially true when when taking antibiotics - which kill all bacteria.