Reversing Immune Decline with Young Gut Microbes in Aging Mice

The immune system of old mice is restored by transplanting gut microbes from young mice

A new study on mice shows that the gut microbiome is responsible for at the very least a part of the decline in the immune system as we age.

The microbiome of the gut

The microbiome is a diverse community of bacteria, archaea and viruses living in our intestines. 98% of intestinal microbiome is made up of four bacterial groups: Firmicutes (Bacteroidetes), Proteobacteria (Proteobacteria), and Actinobacteria.


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