You may have heard the buzz lately about research surrounding the use of young people’s blood to treat Alzheimer’s disease. The latest findings were presented at the recent Clinical Trials on Alzheimer’s Disease conference, as reported by TIME Magazine. After previous studies showed that injecting an old mouse with the blood of a younger mouse (a process called parabiosis) caused improved memory and cognition, neuroscientists have been curious to see whether the same effect could be true in humans.
A group of researchers from Stanford conducted a small clinical trial to test this idea. They recruited 18 elderly volunteers and injected them weekly with young people’s blood plasma (taken from a local blood bank) or a placebo over the course of four weeks. They found that those receiving the young plasma treatments showed significantly enhanced measures of independence, including ability to shop for themselves or balance their own checkbook. No harmful side effects were noted.
The researchers did not study the subjects’ memory or cognitive ability as part of the trial, but these measures are being planned for future studies with a larger sample size. While still very preliminary, this small trial does suggest that there could be some factors in young people’s blood that could improve cognition in older people. While it’s far too early to start storming the blood banks demanding a transfusion, the link between our brains and our blood suggests that we need to be paying particular attention to our cardiovascular health as we age.