Tea Consumption Linked to Lower Vascular Disease Risk in Chinese Adults

A large study of 485,934 adults in China found that regular tea consumption was associated with an 11% lower risk of cardiovascular and other vascular diseases than not drinking tea. The findings, published in the Journal of Internal Medicine, emerged from a median follow-up of 9.05 years during which participants experienced 14,863 cases of cardiovascular disease, cerebrovascular disease, pulmonary heart disease or peripheral artery disease. Researchers estimated that the lowest risk occurred among people consuming approximately six to eight cups of tea per day, although the analysis does not establish that drinking tea caused the reduction.

The researchers examined the relationship between habitual tea intake and the combined risk of major vascular outcomes. Across the cohort, tea drinkers had a lower estimated risk of these diseases than non-tea drinkers. The dose pattern was not presented as a simple, continuous decrease: instead, the analysis estimated the lowest risk at roughly six to eight cups daily, a level of consumption that was also more common among weekly tea drinkers. The release did not provide absolute event rates for tea drinkers and non-drinkers, so the clinical size of the association cannot be calculated from the reported figures.

Tea type and strength also varied in their associations with vascular disease. Black tea showed more consistent inverse associations with the outcomes than green tea. Moderate-strength tea was associated with the lowest estimated risk, suggesting that the relationship was not identical across preparations and brewing strengths. The researchers also found an elevated risk among people who consumed “burning hot” tea. The release did not quantify that increase, identify a safe drinking temperature, or determine whether temperature alone accounted for the association.

Joint analyses indicated that tea consumption was associated with vascular risk alongside smoking status and physical activity. The combination of habitual tea drinking, not currently smoking and high physical activity was associated with the lowest risk. This pattern does not mean that tea drinking compensated for smoking or that physical activity produced the same effect independently. Rather, the combined analysis identified a group in which several health-related behaviors coincided with a favorable vascular-risk profile.

The study offers detailed evidence that tea drinking is associated with lower vascular-disease risk in a large Chinese adult population, but the reported work remains observational in its interpretation. Its findings are based on associations between reported behavior and subsequent disease outcomes, and the supplied report does not describe a randomized intervention or demonstrate a preventive effect of tea. Tea type, consumption level, strength and temperature all appeared relevant to the analysis, with the lowest estimate around six to eight cups daily and at moderate strength. The results therefore support an association rather than a causal conclusion, and they do not establish that increasing tea intake will prevent cardiovascular disease in any individual.

Subject of Research: Associations between habitual tea consumption and vascular-disease risk in Chinese adults

Article Title: Can drinking tea help protect against cardiovascular disease?

Article References: Can drinking tea help protect against cardiovascular disease?. Original publication (Bibliographic details unavailable.)

Image Credits: AI Generated

DOI: Not provided

Keywords: tea consumption, cardiovascular disease, vascular disease, black tea, green tea, drinking temperature, smoking status, physical activity, Chinese adults, cohort study, drinking, help