Glutathione Pathway May Hold the Key to Safer Anti-Obesity Interventions

Aging-US · May 13, 2026 · 5m

Efforts to improve metabolic health through dietary interventions often come with trade-offs. Some approaches that reduce obesity or extend lifespan in laboratory models can also negatively affect other tissues, including bone. One example is sulfur amino acid restriction (SAAR), a diet low in methionine and lacking cysteine that has repeatedly shown strong anti-obesity effects in animal studies. However, despite these promising metabolic benefits, SAAR has also been associated with reduced bone mineral density, weaker bones, and increased marrow fat accumulation. This has led researchers to…