Inherited high cholesterol linked to lower thymus output
Patients reached the healthy comparison group’s median level on a blood-based measure of thymus output about six years earlier.
Limit: Blood markers served as a stand-in for thymus output
Edited by Boris Djordjevic · AgingResearch.News
An observational study in China compared 562 people with familial hypercholesterolemia, an inherited high-cholesterol condition, with 295 age-matched healthy people. Of the patients, 236 had not received treatment and 326 were taking cholesterol-lowering drugs. Researchers estimated output from the thymus, an organ that produces immune cells called T cells, using blood tests.
Untreated patients had a lower share of newly released helper T cells among helper T cells that had not yet encountered their targets. The difference was particularly marked at ages 18–30. DNA-based measurements also supported reduced thymus output. Patients taking statins, a type of cholesterol-lowering drug, had higher circulating levels of newly released helper T cells than patients not taking statins, particularly among women.
Why it matters
The study addresses how lifelong high cholesterol relates to the thymus’s aging and its supply of new immune cells. The authors supported considering metabolic and immune health together when managing familial hypercholesterolemia.
Caveats
This observational study used blood markers to estimate thymus output; it cannot show that high cholesterol caused the differences or that statins reversed them. The findings concern a Chinese cohort with an inherited high-cholesterol condition, not people with high cholesterol generally.
- Statins
- Immune response
- Familial hypercholesterolemia
- Hypercholesterolemia
- Circulating CD4+ recent thymic emigrant level
- Humans
The paper
Familial hypercholesterolaemia and thymic ageing in a Chinese cohort
Beijing Anzhen Hospital; Beijing Shijitan Hospital
European Heart Journal, Oct 20, 2026
