# Tea consumption and cardiovascular disease study

> Live situation record from CLSTR: https://clstr.news/situations/tea-consumption-and-cardiovascular-disease-study
> Updated: 2026-10-24T08:18:11.000Z. Sources: 22. Developments: 2.

A long-term observational study involving nearly 500,000 adults in China has linked regular tea consumption to an 11% lower risk of developing vascular diseases, such as stroke and heart disease. Researchers from Peking Union Medical College and Peking University Health Science Center tracked participants aged 30 to 79 over approximately nine years.

The study, published in the Journal of Internal Medicine, indicates that the optimal consumption level for minimizing risk is six to eight cups per day. Findings suggest that black tea may show a more consistent association with reduced cardiovascular risk than green tea, potentially due to oxidation compounds like theaflavins. 

Health outcomes were also influenced by tea temperature and strength. While room temperature or warm tea was associated with benefits, drinking scalding hot tea was linked to a 16% increase in vascular disease risk and a higher risk of esophageal cancer. Conversely, excessive consumption of approximately 20 cups daily showed no benefit and could increase risk due to high caffeine intake. Researchers noted that the observed benefits are likely driven by polyphenols and flavonoids, which support blood vessel function and reduce inflammation.

Recent data confirms these findings, noting that tea brewed at a moderate strength showed more positive results than extremely strong or weak varieties.

## Timeline

### 2026-10-24: Research highlights tea consumption and cardiac rehabilitation challenges

New research suggests regular tea consumption may reduce cardiovascular disease risk, while a Norwegian report identifies significant barriers to effective cardiac rehabilitation services.

2 sources. https://clstr.news/cluster/research-highlights-tea-consumption-and-cardiac-rehabilitation-challenges

### 2026-10-23: Tea consumption linked to lower vascular disease risk

A nine-year study of 486,000 adults suggests regular tea consumption, particularly black tea, can reduce vascular disease risk by 11%, with optimal benefits seen at six to eight cups daily.

20 sources. https://clstr.news/cluster/tea-preparation-and-consumption-habits-linked-to-heart-health

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Cite as: Tea consumption and cardiovascular disease study. CLSTR, https://clstr.news/situations/tea-consumption-and-cardiovascular-disease-study