12 Oct 2017 --- A potential strong link between healthy aging and a healthy gut has been shown by one of the largest microbiota studies conducted in humans. The China-Canada Institute researchers studied the gut bacteria in a cohort of more than 1,000 Chinese people in a variety of age ranges from 3 to over 100 years old. The subjects were self-selected to be extremely healthy with no known health issues and no family history of disease. The results showed a direct correlation between health and the microbes in the intestine.