Research on mice found that giving young mice fecal transplants from old mice caused the young mice to exhibit some "elderly mouse" traits. The study was published in Microbiome and described at the website New Atlas.
The procedure had an impact on the expression of proteins involved in key functions of the hippocampus – an important part of the brain that has a vital role in a variety of functions including memory, learning but also in spatial navigation and emotional behavior and mood.
One of these days us old crocks may get a young poop transfusion every couple of years to keep us alert and feisty. That is, if the procedure works in the opposite direction, something it appears we do not yet know. Hat tip to Instapundit for the link.
