A pair of studies identify Eubacterium eligens as an excellent bacterial citizen of the gut.
One study found that the bacterium had a protective effect on women against PTSD:
The other found that the bacterium was strongly associated with lower visceral abdominal fat:
These are obviously good things. So how do you cultivate this bacteria? The answer seems to be straightforward–the Mediterranean diet:
In particular, green beans, chard, spinach, salad and nuts. These are foods that you already knew were good for you. Now you have another reason to change your diet.