Black Tea: Health Uses and Risks (2024)

What Is Black Tea?

Black tea is made from the leaves of a bush called Camellia sinensis. It has caffeine as well as other stimulants and antioxidants. Lots of people in the U.S. drink it either hot or cold. It should always be steeped in hot water before it is cooled.

A process called oxidation turns the leaves from green to a dark brownish-black color. Oxidation means the leaves are exposed to moist, oxygen-rich air.

Tea manufacturers can control the amount of oxidation. Black tea is a fully oxidized tea. Green tea comes from the same plant, but is not oxidized.

Black tea extract is sometimes sold as an herbal supplement. Sometimes, the supplement includes other types of herbs, vitamins, or minerals.

Black Tea Benefits

Many people drink black tea just because they like it. People also may use it for:

  • Alertness and energy
  • Antioxidants, including polyphenols and catechins
  • Possible anti-cancer effects
  • Heart health
  • Improved metabolism
  • Gut health

More research is needed, but there’s some evidence drinking black tea regularly may lower your risk for these conditions:

Black Tea Risks

Drinking black tea in moderate amounts is generally safe for most people. There’s no known right amount to drink. Supplement ingredients and quality may vary widely. This makes it hard to set a standard dose.

Drinking large amounts of black tea -- more than four or five cups a day -- may cause health problems. That's mostly because of caffeine-related side effects.

Side effects of black tea (most often in high amounts) may include:

Combining black tea with other types of caffeine or a product called ephedra can be very dangerous. Some of the problems it can cause include:

  • Jitteriness
  • Increased blood pressure
  • Heart rate changes
  • Seizures
  • Passing out

Black tea or black tea supplements may interfere with other medicines and supplements you are taking. Some medicines can also cause caffeine to stay in your body longer than usual. Talk to your doctor to find out if any medicines you are taking may have this effect. The caffeine in black tea may also interfere with certain blood tests. Always tell your doctor about any supplements you are taking, including natural ones and those bought without a prescription. Let your doctor know if you drink a lot of black tea.

If you use supplements with black tea, keep in mind that the FDA does regulate dietary supplements; however, it treats them like foods rather than medications. Unlike drug manufacturers, the makers of supplements don’t have to show their products are safe or effective before selling them on the market.

Black Tea: Health Uses and Risks (2024)

FAQs

Is there a downside to drinking black tea? ›

The caffeine in black tea, especially when taken in large amounts, might worsen diarrhea. Seizures: Black tea contains caffeine. High doses of caffeine might cause seizures or decrease the effects of drugs used to prevent seizures. If you have ever had a seizure, don't take high doses of caffeine.

Is it healthy to drink black tea everyday? ›

Drinking at least two cups of black tea daily lowers the risk of death from any cause by almost 13% compared to people who do not drink tea, according to a recent study. As in other findings, the more tea participants drank, the lower the risk of cardiovascular disease, heart disease and stroke.

Is black tea healthier than coffee? ›

Both beverages offer health benefits and the best one for you will depend on taste and what you're looking for. If you want to lose weight, black tea (or green tea!) is a better choice than coffee. If you need a high-energy kick, coffee's higher caffeine content is the clear winner.

Does black tea detox your body? ›

Black tea not only has effects on the digestive system, but also on the urinary system. Known to hydrate the body, it stimulates the functioning of the kidneys, while promoting the elimination of toxins. Its diuretic effect consists in eliminating more water and salt than usual.

Is black tea good for your kidneys? ›

Black tea is rich in oxalate, a compound found naturally in many foods. Too much of it can also lead to kidney stones. The man likely consumed 1,500 milligrams of the compound daily. As a comparison, the average person ingests between 150 and 500 milligrams of oxalate each day.

What is the healthiest way to drink black tea? ›

Adding lemon peel or lemon verbena to black tea not only elevates the flavor but significantly enhances its health benefits. Lemon juice increases the absorption of antioxidants from the tea, maximizing its health potential.

What is the healthiest tea to drink? ›

Green tea will get you “the most bang for your buck” when it comes to nutritional benefits, Crumble Smith said. It has better antioxidant properties than black tea because it contains more polyphenols.

Is black tea good for your liver? ›

Black tea is the most-consumed tea beverage in the world, and its health benefits, including anti-obesity anti-atherosclerosis properties and the prevention of fatty liver, have been frequently reported (5).

Which is healthier black tea or green tea? ›

Key takeaways: Both green and black tea come from the same plant. But because of how they are processed, green tea typically contains less caffeine than black tea. Green tea is thought to be healthier than black tea because it has a higher number of beneficial compounds.

What are the side effects of black tea? ›

Side effects of black tea (most often in high amounts) may include:
  • Anxiety and difficulty sleeping.
  • Faster breathing.
  • Headache.
  • Increased urination.
  • Irregular heartbeat.
  • Nausea and vomiting.
  • Nervousness and restlessness.
  • Ringing in the ears.
Sep 21, 2022

Is black tea good for your arteries? ›

“Black tea has cardio-protective benefits that can improve blood vessel function and blood flow,” says Mintz. He also notes this is due to polyphenols and flavonoids, antioxidants found in plants like tea lives, which research suggests can help prevent cell damage, reduce inflammation, and improve cholesterol levels.

Does black tea clean gut? ›

Black tea contains polyphenols, which may help promote the growth of good bacteria in the gut while also stopping the growth of bad bacteria. Black teas also contain antimicrobial properties that can destroy any harmful substances found in the gut. The result is better overall health in the digestive system.

Does black tea burn belly fat? ›

Participants from a 2014 study published in Food & Function who drank three cups of black tea every day for three months saw more weight loss and reduction in their waist circumference (AKA their belly fat) than those who didn't drink the tea.

What is the best time to drink black tea? ›

Benefits of Drinking Black Tea in the Morning, in the Evening, or at Night. If you want to stay awake during the night or prefer having tea after the daytime, the ideal time is 8:30 pm. At this time, your immune system performs at its best. Thus, drinking black can help replenish and repair it.

Which is better for you, black or green tea? ›

Green and black tea provide similar health benefits, including for your heart and brain. While green tea may contain more powerful antioxidants, the evidence does not strongly favor one tea over the other. Both contain the stimulant caffeine and L-theanine, which has a calming effect.

What is the downside of drinking tea? ›

Although moderate tea consumption is typically healthy for most people, drinking too much may lead to side effects, such as anxiety, poor sleep, and headaches. Most side effects are related to tea's caffeine and tannin contents. Tea is one of the world's most beloved beverages.

Why is black tea not as healthy as green tea? ›

Key takeaways: Both green and black tea come from the same plant. But because of how they are processed, green tea typically contains less caffeine than black tea. Green tea is thought to be healthier than black tea because it has a higher number of beneficial compounds.

Is it okay to drink black tea instead of water? ›

If you're a regular tea drinker, you can continue drinking tea and it will contribute to your overall hydration level. It shouldn't replace water, though, especially if you're drinking more than six or seven cups of black tea per day. It's important to incorporate some water into your daily fluid intake.

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