Neat News 2316 (added 2022-05-04)
Faecal transplants to reverse ageing

Public Domain by Lucas Cranach the Elder (1546)
In experiments, scientists found that transplanting faecal microbiota from young into old mice leads to a reversal of the signs of ageing in the gut, the eyes, and the brain (and vice versa).
related: #rejuvenation #faecal_transplant