A cup of freshly brewed green tea with loose green tea leaves

Is Green Tea Good for High Cholesterol? Benefits and Tips

Dr. Sarha Eusuf, MBBS
Written by Dr. Sarha Eusuf, MBBS
Medically reviewed by MD, FACC
Last reviewed

Is green tea good for high cholesterol? It may help a little, but the effect is small and it is not a substitute for proven cholesterol management. Pooled research suggests green tea is associated with modest average reductions in total and LDL (“bad”) cholesterol, and results vary between studies. Many of those studies tested concentrated extracts rather than ordinary brewed tea.

Green tea contains catechins, including epigallocatechin gallate (EGCG), along with other plant compounds called polyphenols. Researchers have studied these compounds for effects on blood lipids, which are fats such as cholesterol and triglycerides in the blood. The National Center for Complementary and Integrative Health (NCCIH) notes that most cholesterol studies evaluated green tea extract supplements rather than green tea as a beverage.

This article explains what the research shows, how green tea might work, and where the evidence falls short. It also covers caffeine, supplement safety, medication interactions, and simple ways to fit unsweetened green tea into a heart-healthy diet. For background on the condition, see our guide to high cholesterol.

Can Green Tea Help Lower Cholesterol?

Some research says yes, but only modestly. First, it helps to know the main blood lipid measures:

  • LDL cholesterol is often called “bad” cholesterol because high levels contribute to plaque buildup in the arteries.
  • HDL cholesterol is often called “good” cholesterol. Our guide to LDL versus HDL cholesterol explains the difference.
  • Total cholesterol combines LDL, HDL, and other components.
  • Triglycerides are another type of blood fat.

A 2020 systematic review and meta-analysis in Nutrition Journal pooled 31 randomized controlled trials with 3,321 participants. Green tea intake lowered total cholesterol by an average of 4.66 mg/dL and LDL cholesterol by an average of 4.55 mg/dL compared with controls. It did not affect HDL cholesterol, and the change in triglycerides was not statistically significant. The authors called for additional well-designed studies in more diverse populations and over longer periods.

Those are modest average changes, and they do not mean every person will see a reduction. Other analyses have been less encouraging. A systematic review of green and black tea trials lasting at least four weeks found no significant effects on cholesterol or blood pressure, noting that many studies were small and underpowered. A 2025 meta-analysis in people with metabolic syndrome also found no significant effect on LDL or total cholesterol.

A key limitation is the form of green tea. Trials ranged from brewed tea to capsules, and doses varied widely. Results from extracts should not be assumed to apply to a cup of tea you make at home. Finally, a small change in a laboratory measure does not prove fewer heart attacks or strokes.

How Green Tea May Affect Cholesterol Levels

Researchers have proposed several mechanisms. These are plausible explanations, but they are not proof of a clinical benefit.

Catechins and EGCG

Catechins are polyphenols with antioxidant activity in laboratory studies. EGCG is the most abundant catechin in green tea. One reference text reports that a typical cup of brewed green tea contains roughly 50 to 100 milligrams of catechins (NCBI Bookshelf), though amounts vary by tea and preparation.

How plant compounds may influence cholesterol absorption and metabolism

Some researchers suggest catechins may reduce how much cholesterol is absorbed in the gut or change how the liver handles fats. Laboratory and animal studies have shown that green tea catechins can reduce plasma triglycerides, total cholesterol, and LDL cholesterol. How much of this applies to people drinking tea is less clear.

Potential effects on LDL cholesterol

If an effect exists in people, the pooled data suggest it is small, on the order of a few mg/dL. That is far less than the reductions achieved with diet changes and prescribed medicines, which are typically much larger.

Why biological mechanisms do not automatically prove clinical benefits

A mechanism seen in cells or animals does not guarantee a meaningful result in people. Dose, absorption, other foods in the diet, and individual differences all matter. Treat these ideas as hypotheses that need stronger human evidence.

Potential Health Benefits of Green Tea for Heart Health

Green tea can be a pleasant part of a heart-healthy routine, as long as expectations stay realistic.

May modestly improve total and LDL cholesterol

As described above, some meta-analyses report small reductions. NCCIH’s clinical overview of cardiovascular disease notes that green or black tea may have small beneficial effects on cardiovascular risk factors. Evidence for actual cardiovascular outcomes, such as heart attacks and strokes, is less certain than evidence for individual blood lipid measurements.

Provides polyphenols with antioxidant activity

Green tea is one source of polyphenols, which are also found in fruits, vegetables, nuts, and other plant foods. Our guide to antioxidant-rich foods lists other options. Antioxidant activity in the laboratory does not by itself prove a clinical benefit.

Can replace sugar-sweetened beverages

Unsweetened green tea has almost no calories. Choosing it instead of soda, sweet tea, or juice drinks reduces added sugar, which the Dietary Guidelines for Americans encourage. That benefit comes from what you replace, not from a special property of tea.

Can fit into a balanced, heart-healthy dietary pattern

The American Heart Association’s 2026 dietary guidance reinforces the importance of focusing on heart-healthy dietary patterns rather than on single foods or nutrients. Green tea can be an optional beverage within such a pattern. It is not the central treatment.

How Much Green Tea Should You Drink for High Cholesterol?

No universally established number of cups has been shown to treat high cholesterol. The trials used a wide range of doses, and the 2020 meta-analysis included products from beverages to concentrated catechin capsules. Those supplement doses should not be converted directly into a daily tea prescription.

A few practical points:

  • Cup size and strength vary. The amount of tea, water temperature, and steeping time all change the catechin and caffeine content.
  • Choose unsweetened brewed tea. It is the simplest and lowest-risk option.
  • Practice moderation. Start with one or two cups and see how you feel.
  • Know your caffeine sensitivity. One reference text reports roughly 30 to 40 milligrams of caffeine in a typical 250 mL cup (NCBI Bookshelf). The FDA cites about 400 milligrams per day as an amount not generally associated with negative effects for most healthy adults. That is not a target, and it does not apply equally to everyone.

If caffeine makes you jittery, affects your sleep, or causes a racing heart, consider reducing your intake or choosing decaffeinated tea. For more on daily intake, read our article on drinking green tea every day.

Risks and Side Effects of Green Tea

For most adults, brewed green tea has a good safety record. NCCIH reports that no safety concerns have been identified for green tea consumed as a beverage by adults, while noting that it contains caffeine. The concerns below mostly involve caffeine, supplements, and medicines.

Caffeine, sleep disruption, and sensitivity

Caffeine can cause trouble sleeping, jitteriness, and a faster heartbeat in sensitive people. The FDA notes that individuals differ in how they respond. If you notice these symptoms, our guides to how to improve sleep and heart palpitations may be helpful. Caffeine can also affect blood pressure temporarily; see our article on green tea and high blood pressure.

Green tea extracts versus ordinary brewed tea

Concentrated extracts can deliver much more catechin per dose than a cup of tea. One research paper notes that the catechins in a single tablet labeled as green tea extract may equal three to ten cups of green tea. Findings and risks from extracts should not be transferred to brewed tea, and the reverse is also true.

Possible liver injury associated with concentrated extracts

NCCIH reports that liver injury has been uncommon but has been linked primarily to green tea extracts in tablet or capsule form. The National Library of Medicine’s LiverTox database describes green tea extract as a well-established cause of clinically apparent liver injury, while noting that it is rare compared with how widely these products are used. People with liver disease should speak with a health care provider before using extract products.

Interactions with cholesterol-lowering medicines

NCCIH reports that green tea extract can reduce blood levels of atorvastatin, a statin, and that green tea at high doses has been shown to reduce blood levels of the beta-blocker nadolol. A small study also found that a single cup of brewed green tea can reduce nadolol absorption for at least an hour. These findings do not mean all medicines interact in the same way.

The Merck Manual also reports that green tea may affect warfarin and reduce absorption of iron and folic acid. If you take any medication, ask a pharmacist or clinician before making green tea a daily habit or using a supplement. Never stop or change a prescribed statin on your own.

How to Include Green Tea in a Cholesterol-Friendly Diet

Green tea works best as one beverage within a bigger plan. The overall dietary pattern matters far more than any single drink.

Drink unsweetened green tea

Enjoy it with meals or between meals, hot or iced. Check labels on bottled teas, which often contain added sugar (see our guide to nutrition facts).

Pair it with fiber-rich foods

Oats, beans, lentils, fruits, and vegetables are excellent sources of fiber. Our guides to high-fiber foods, healthy foods, and the health benefits of leafy green vegetables can help you build meals around them.

Include nuts, seeds, fish, and other unsaturated fats

Nuts, seeds, fatty fish, olive oil, and avocados provide unsaturated fats. See our articles on healthy fats, olive oil benefits, and fatty fish.

Replace saturated fat with healthier alternatives

An American Heart Association presidential advisory concluded that replacing saturated fat with unsaturated fats, especially polyunsaturated fats, lowers LDL cholesterol and the incidence of cardiovascular disease, within an overall healthful pattern such as DASH or the Mediterranean diet. Saturated fat is found in fatty meats, full-fat dairy, and tropical oils.

Our overview of the Mediterranean diet is one example of such a pattern.

Keep the big picture in mind

Regular physical activity, adequate sleep, a healthy weight, cholesterol testing as advised, and medication taken as directed all matter. See our guides to cholesterol and heart health, exercise and heart health, and what makes a balanced diet.

Frequently Asked Questions

Does green tea lower LDL cholesterol?

It may lower it slightly. A 2020 meta-analysis of 31 randomized trials found an average LDL reduction of about 4.55 mg/dL , but other reviews found no significant effect, and many trials used extracts.

How many cups of green tea can you drink daily?

No specific number has been proven to treat high cholesterol. Many adults drink a few cups a day without problems, but the right amount depends on your caffeine tolerance and total caffeine intake. The FDA cites about 400 milligrams of caffeine per day as an amount not generally associated with negative effects for most healthy adults.

Is green tea better than black tea for cholesterol?

Research does not clearly show that one is better. NCCIH notes that green or black tea may have small beneficial effects on cardiovascular risk factors. Choose the one you enjoy and tolerate well, and keep it unsweetened.

Does green tea raise HDL cholesterol?

Probably not. The 2020 meta-analysis found that green tea consumption did not affect HDL cholesterol.

Can green tea replace statins?

No. Green tea has not been shown to match the effectiveness of prescribed cholesterol-lowering medicines, and green tea extract can lower atorvastatin levels (NCCIH). Do not stop or change a prescribed statin without talking with your clinician.

Is green tea extract more effective than brewed tea?

Not necessarily, and extracts carry extra risks. Most cholesterol trials used extracts, but concentrated products have been linked to rare liver injury and drug interactions (LiverTox). Brewed tea is generally the lower-risk choice unless a clinician advises otherwise.

Conclusion: Should You Drink Green Tea If You Have High Cholesterol?

Green tea may modestly lower total and LDL cholesterol for some people, but the average effect is only a few mg/dL, studies disagree, and much of the evidence comes from extracts. It is not a substitute for a heart-healthy diet, prescribed medication, or professional care.

If you enjoy it, unsweetened brewed green tea is a reasonable beverage choice, and it is generally safer than concentrated supplements unless a clinician advises otherwise. Put your effort into the habits with the strongest evidence: more fiber, unsaturated fats in place of saturated fats, regular activity, cholesterol testing, and taking your medication as directed.

For more heart-healthy ideas, explore our guides to heart-healthy foods and green tea health benefits.

Sources

Medical Disclaimer

This article is for general educational purposes only and is not medical advice. It does not diagnose, treat, or replace guidance from a qualified health care professional. If you have high cholesterol, talk with your doctor or pharmacist before making green tea a daily habit, using supplements, or changing your diet or medications. Do not stop taking prescribed medicine without medical advice. If you think you are having a medical emergency, call 911 or your local emergency number right away.