Scientists have found a compound that can promote weight loss without causing the bone damage often seen with restrictive diets. This discovery comes as researchers explore methods to improve health without negative effects on bones.
Restricting certain amino acids, such as methionine and cysteine, can lead to quick fat loss and longer lifespans in animals. However, this approach usually causes weaker bones. New findings suggest it might be possible to avoid this trade-off.
The study, led by Naidu B. Ommi from the Orentreich Foundation, focused on cysteine and a molecule called glutathione, which is important for cellular defence. Their aim was to see if weight loss effects could be achieved without harming bones.
A specific diet known as sulfur amino acid restriction (SAAR) showed effective fat reduction even with high-fat foods. However, this diet lowered bone density and cell development, resulting in weaker bones.
Researchers tested four diet regimens on mice to pinpoint the cause. They introduced compounds like N-acetylcysteine (NAC) to restore cysteine levels and a substance called BSO to reduce glutathione. Results showed SAAR led to bone damage, but adding NAC reversed these effects, pointing to the role of cysteine and glutathione.
BSO enabled fat loss without affecting bone health, suggesting that targeted approaches might avoid negative effects. Future treatments could replicate diet benefits without risks, but more research is needed to understand long-term safety and effectiveness across different ages and sexes.
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