Put this one on your resolution list.
The community of bacteria and other microbes living in your intestinal tract is known as your gut microbiome. And it could be a long-term investment in your health, as they help us process the nutrients in the foods we eat, bolster the immune system, and keep your metabolism moving along.
You can enrich your gut bacteria by consuming more fiber through fruits, veggies, whole grains, legumes, and nuts or seeds. Aim for 40 or 50 grams of fiber each day, well above levels recommended by most dietary guidelines.
The New York Times has even more.