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Cholesterol is a waxy substance your body needs to build cells and make hormones. Problems arise when too much LDL cholesterol, often called "bad" cholesterol, builds up in the walls of arteries. Over time this can narrow them and raise the risk of heart attack and stroke. Many people wonder whether tea can help, so here is a clear look at the evidence.
LDL and HDL in brief
LDL carries cholesterol into the arteries, where excess amounts can contribute to plaque. HDL, sometimes called "good" cholesterol, helps carry cholesterol away to the liver for removal. Doctors also look at triglycerides, another type of blood fat. A healthy pattern usually means lower LDL, adequate HDL and moderate triglycerides.
What studies have found
Green tea has received the most attention. Reviews that pooled data from many clinical trials have reported that green tea or green tea catechins can produce small reductions in LDL and total cholesterol. Effects on HDL and triglycerides have generally been minimal.
Black tea has been studied less for cholesterol, and the results are mixed. Some trials show modest improvements, while others show little change. Overall, the evidence suggests tea may offer a small benefit, but it is not a substitute for proven approaches.
How tea might affect cholesterol
Researchers believe catechins may reduce the amount of cholesterol absorbed from food in the gut. They may also influence how the liver handles cholesterol. Laboratory research suggests tea flavonoids can protect LDL particles from oxidation, a process thought to play a part in plaque formation. These mechanisms are still being studied.
Watch what you add
The way you take your tea matters. Adding several spoonfuls of sugar, syrups or full-fat cream adds calories and can work against your heart-health goals. Sweet bottled teas can contain as much sugar as soft drinks. To keep tea heart-friendly:
- Drink it plain, or with a slice of lemon or a sprig of mint
- If you like milk, use a small splash of a lower-fat option
- Gradually reduce sugar until you enjoy the natural flavor
- Choose freshly brewed tea over sweetened bottled versions
Proven ways to improve cholesterol
The strongest evidence for healthier cholesterol comes from lifestyle changes and, when needed, medication prescribed by a doctor. Helpful habits include:
- Replacing saturated fats, such as butter and fatty meats, with unsaturated fats from olive oil, nuts and fish
- Eating more soluble fiber from oats, beans, lentils, fruit and vegetables
- Staying physically active
- Keeping a healthy weight
- Not smoking
Tea fits easily alongside these habits, for example as a warm drink with a bowl of oatmeal in the morning.
A note on supplements and medication
Green tea extract pills deliver far more catechins than a cup of tea, and high doses have been linked to rare liver problems. If you take cholesterol-lowering medication, keep taking it as prescribed. Tea is not a replacement for treatment. Always ask your doctor or pharmacist before adding supplements or making major changes.
Summary
Tea, especially green tea, may help lower LDL cholesterol slightly. Enjoyed without lots of sugar or cream, it can be a pleasant part of a cholesterol-friendly diet built on fiber-rich foods, healthy fats and regular activity.
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