Read More: New Scientist
Old blood may have a powerful effect, damaging organs and contributing to ageing. Now a compound has been developed that seems to protect against this, preventing mice’s brains from ageing. The effects of blood on ageing were first discovered in experiments that stitched young and old mice together so that they shared circulating blood. Older mice seem to benefit from such an arrangement, developing healthier organs and becoming protected from age-related disease. But young mice aged prematurely. Such experiments suggest that, while young blood can be restorative, there is something in old blood that is actively harmful. Now Hanadie Yousef at Stanford University in California seems to have identified a protein that is causing some of the damage, and has developed a way to block it.