A simple substance had a surprising rejuvenating effect mice, which might lead to a safe age reversing drug. The drug called nicotinamide mononucleotide (or NMN) was added to the drinking water of aging mice. After just one week the tissue samples from the two year old and the two months old mice were indistinguishable.
The NMN boosts the nicotinamide adenine dinucleotide (NAD+) level in the cells, which is critical to repairing the DNA.
Human trials will begin in months, and the drug can hit the shelves in a few years.