The Hadza are a group of hunter-gatherers living in Tanzania in Africa. As the seasons change, so does their diet — from plant-heavy in the wet season to meat-heavy in the dry season. A new study published in Science found that shift in diet changes the types ad abundance of microbes in their gut.
Why it matters: Although microbiome research is still in its infancy, some results suggest diverse gut ecosystems, like the Hadza's, can be protective against illnesses. And, researchers are interested in whether diets can be supplemented with microbes in order to fight infection.