Health

Drinking black tea may reduce risk of death, study suggests


Wtake a walk tea Long known for its health benefits, research has mixed more on black tea. One problem, says Maki Inoue-Choi, an epidemiologist at the National Cancer Institute, is that large observational studies of tea and mortality have focused on countries like Japan or China – the ones where green tea is more popular.

To fill this gap, Inoue-Choi and her colleagues analyzed data in UK, where the drinking of black tea is common. After surveying about 500,000 people and following them for an average of 11 years, the results were published August 29 in the journal Annals of Internal Medicine, has given strength to black tea. Among tea drinkers — 89% of whom drank black tea, compared with 7% of green tea drinkers — drinking tea was associated with a modestly lower risk of death for those who drank two cups or more. a day compared to those who didn’t drink. Those who add milk or sugar also get this benefit, and the results are consistent regardless of the type of tea temperature. The findings also indicate that tea drinkers have a lower risk of death from cardiovascular disease, ischemic heart disease and stroke than non-tea drinkers.

While it’s difficult to say why tea drinkers may live longer, it’s not entirely a surprise. According to Inoue-Choi, tea is “rich in bioactive compounds” that help reduce stress and inflammation, including polyphenols and antioxidants. Flavonoids.

One year 2020 research used the same UK database as the new study found that there was an association between higher consumption of both black and green tea and biomarkers that predicted heart metabolic health, including even lower cholesterol levels. Research also shows that tea can help reduce blood pressure.

In the future, researchers should take a closer look at the link between tea and health, says Rob M. van Dam, professor of nutrition and exercise science at the Milken School of Public Health at George Washington University. heart-related diseaes. He noted that one thing that stood out about the new study was that there was no association between increased tea dosage – the amount a person consumed – and reduced mortality after that person drank two or three cups. The exception, he says, is if you exclude coffee drinkers, who may find it difficult to detect an association between increasing the amount of tea you drink and mortality because they have lower mortality rates in the process. research program. Without the coffee drinkers, it was clear that drinking tea was associated with a reduced risk of dying from heart disease. “The association between tea drinking and cardiovascular mortality could lead to an association between tea consumption and all-cause mortality,” says Van Dam.

However, this does not mean that you should run to your kettle. The new study is based on an observational study – that is, the evidence was not gathered from an experiment and the results were inferred by researchers. The findings should not be used to make health decisions and should be replicated in randomized clinical trials, experts say. Plus, the association between tea drinking and mortality was modest, meaning it’s likely that another characteristic of tea drinkers could contribute to this effect, van Dam said. For example, hypothetical tea drinkers are likely to consume less soft drink.

As Inoue-Choi said, the new findings should reassure regular tea drinkers. But “people shouldn’t change how many cups of tea they drink per day because of these results,” she says.

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