Summary:
- As we age, our brains can turn a vital amino acid called tryptophan into a toxic substance called quinolinic acid. This can lead to inflammation and damage in the brain.
- Researchers have discovered the mechanism behind this process, which involves an enzyme called IDO. This enzyme becomes more active as we get older, causing tryptophan to be converted into quinolinic acid.
- Understanding this process could help scientists develop new treatments to protect the aging brain and prevent cognitive decline.