According to the New York Times and the BBC, two teams of scientists published studies on Sunday showing that blood from young mice reverses aging in old mice, rejuvenating their muscles and brains. The research is significant because it could lead to treatments for disorders like Alzheimer’s disease and heart disease.
Alzheimer's Research UK said the treatment rejuvenated certain aspects of learning and memory in mice, but was "of unknown significance to humans".
A substance in the blood of mice previously shown to have an anti-aging effect on heart muscle, also boosted brain cells.
The research, published in Science, found the blood factor encouraged the growth of brain cells in old mice, and restored their sense of smell.
The same chemical also boosted muscle power in aged mice, the researchers found.