Cutting Back One Amino Acid Increased The Lifespan of Mice Up to 33%

 


In mice, limited intakes of one specific essential amino acid can slow the effects of aging and even extend their lifespan, research from the US shows.

Scientists wonder if these findings could help people improve their longevity and quality of life.

Isoleucine is one of three branched-chain amino acids that our bodies use to make proteins. It's essential for our survival, but our cells can't produce it from scratch, so we have to get it from sources like eggs, dairy, soy protein, and meats.

In the most recent study, a genetically diverse group of mice was fed either a diet containing 20 common amino acids as a control, a diet where all amino acids were reduced by about two-thirds, or a diet where only isoleucine was reduced by the same amount.

The mice were around six months old at the start of the study, which is the equivalent age of a 30-year-old person. They could eat as much as they wanted, but only from the specific kind of food provided to their group.

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