Taurine, an unexpected brake on age-related inflammation
A Yale study in Cell reveals how this amino acid controls a key immune alarm.
An amino acid found in many foods and drinks could help curb the chronic inflammation that comes with aging.
Researchers at Yale School of Medicine studied so-called "inflammaging," a low-grade inflammation that increases with age. At its center is the NLRP3 inflammasome, a protein complex in immune cells that, when activated, triggers inflammatory responses.
They discovered that taurine acts as a regulator of that switch. When macrophages detect danger signals that activate the inflammasome, they release up to 80% of their taurine; that loss dismantles an internal cell structure, the trans-Golgi, and activates the inflammasome. Restoring taurine inside the cell prevents this process. In mice, reducing taurine increased inflammation even in young animals, and supplements extended their healthy lifespan.
There was a surprise: blood taurine levels were higher in people aged 60 to 99. So the challenge would not simply be consuming more taurine, but keeping aging immune cells from losing it.
The team is now investigating what happens to taurine after it leaves macrophages.
Key facts
- Macrophages released up to 80% of their taurine when the inflammasome was activated.
- Less taurine meant more inflammation, even in young mice.
- Circulating taurine rises with age in humans and mice.
- Study published in the journal Cell in 2026.
The authors suggest exploring taurine-based therapies against age-related inflammation, not yet tested in people.
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