Author Peter Andrey Smith titled his article on the relationship of the brain to the intestines, and, in particular, the tiny creatures that live in our intestine beautifully: “ The tantalizing links between gut microbes and the brain ”. If the human brain is the frontier of medical science, the microbiome , those tiny creatures that live in our intestinal tract, is Jupiter. The linkage between what goes on in the gut and the brain is indeed tantalizing, and the subject of research worldwide. There are over 1,000 different kinds of those things living inside us. There are hints that having the wrong mix of gut microbes, or the absence of any particular type, is linked to asthma, irritable bowel syndrome, allergies, depression, Alzheimer’s disease and more. Further, antibiotics, illnesses and other factors can deplete the population. Here are seven things we can do to help keep our little creatures happy and healthy. Eat the right stuff. There is evidence...