Scientists find hidden driver of aging and a simple amino acid that fights memory loss in mice

What if some of the changes we associate with aging begin with the loss of a single protein deep inside the brain? Scientists investigating that possibility found that restoring a protein called Menin in older mice improved memory, balance, bone mass, and skin thickness in just 30 days. Even more surprisingly, supplementing the animals with a naturally occurring amino acid improved their learning and memory in only three weeks.

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