Dysbiosis:
Dysbiosis means that you have an imbalance in the different types of microscopic organisms living in your body. If there are too many of some types and not enough of others, they don’t work with you as they should, and they might work against you. In particular, dysbiosis in your gut may have broad effects on your health. [Cleveland Clinic]
Noted in “‘Hidden’ group of gut bacteria may be essential to good health,” Chris Simms, NewScientist (14 February 2026; paywall):
In another part of the study, [Alexandre] Almeida [at the University of Cambridge] and his colleagues investigated which bacterial species were most associated with a healthy mix of gut microbes or an unbalanced one, known as dysbiosis.
I’m not entirely comfortable with that definition. What defines unbalanced?
