'Microbiome' is at the core of health.

Nobel Prize in Medicine, Lederberg & McGray (2001, The Scientist)

Human cells make up 10% of our body, while the remaining 90% includes our 'microbiome', a microbial community living in the body. Most of these microorganisms live in the digestive system such as the small and large intestine. Metabolites of intestinal microbes therefore affect the immune cells, endocrine cells, and even nerve cells, influencing the overall function of human body. In particular, it has been reported that the composition of the microbiome plays an important role in the onset of various diseases. Various academical and medical researches have been increasingly focusing on the microbiome, also termed the ‘second genome’ as a possible therapeutic. Our intestine digests and absorbs food, and transforms it into usable energy. 70-80% of the total immune cells are concentrated in digestive system to protect against external harmful microorganisms during the process of digestion and absorption, with additional help from the intestinal microbes. For optimal intestinal health, it is necessary to manage the balance between beneficial and harmful bacteria in the intestine, and consuming probiotics can help increase the ratio of beneficial bacteria in the intestine.