This study suggests that the newly discovered Dysosmobacter welbionis bacteria benefits body weight and metabolism, which could be a valuable intervention for targeting obesity and other metabolic disorders.

This hair pigmentation study adds to a growing body of evidence demonstrating that human aging and greying hair is not a linear, fixed process but may be halted or even temporarily reversed.

World Trade Center responders with current PTSD present with premature aging, altered gene activity called transcriptional aging, and accelerated epigenetic biological clocks.

The sirtuin SIRT6 — also known as a "longevity gene" — improves health markers and provides almost a 30% boost in longevity when mice have increased activity of the protein.