Amounts of caffeine vary between teas, with black tea containing the most caffeine. Green and white teas contain the least, except for noncaffeinated teas.
Tea is one of the
The more tea leaves oxidize, the darker they become, which determines the type of tea:
Black tea is the most popular in the United States and Europe and accounts for about
In this article, we look at the most caffeinated teas, top healthy teas with no caffeine, and some of the risks involved in consuming too much caffeine.
The
The most caffeinated teas are black and oolong teas, with decaffeinated and herbal teas containing very little to trace amounts of caffeine.
Many teas offer various health benefits, as they contain:
Black contains the highest amount of caffeine, ranging between 64 and 112 milligrams (mg) per 8-fluid ounce (fl oz) serving.
Black tea
Oolong tea contains between 29 and 53 mg of caffeine per 8-fl oz serving.
It contains no fats, sugars, protein, or fiber. Per
Oolong tea may help with weight loss.
It may also help with heart disease, as research shows that oolong tea may lower cholesterol, which can lower the risk of heart disease.
The caffeine in green tea ranges between 24 and 39 mg per 8-fl oz serving.
According to the
Green tea may have health benefits, including:
The caffeine in white tea ranges between 32 and 37 mg per 8-fl oz serving.
White tea
These contain less than 12 mg of caffeine per 8-fl oz serving, and many natural herbal teas that are caffeine-free contain no traceable amount of caffeine.
Many teas have zero to trace amounts of caffeine. A person can usually find a decaffeinated version of their favorite black, green, or white tea, including Earl Grey tea, but many herbal teas are naturally caffeine-free. Healthy caffeine-free teas with notable health benefits include the below.
This tea contains no caffeine. Research on animals suggests that rooibos supplements may help protect the liver from oxidative stress and may help lower blood pressure.
Research
Chamomile tea
Consuming too much caffeine can cause health problems. The Food and Drug Administration (FDA) has cited
Some people should avoid or limit their intake of caffeine, including individuals who:
Learn more about the potential risks and dangers of caffeine consumption.
The most caffeinated teas include black, oolong, green, and white teas. These all have potential health benefits, as they contain antioxidants, polyphenols, flavonoids, flavonols, and other health-promoting compounds.
Health benefits of tea include:
If a person wishes to avoid caffeine, which may overstimulate or interact with certain health conditions, decaffeinated varieties of popular teas are usually available. Some teas, including many herbal teas, are naturally caffeine-free. Healthy caffeine-free teas with health benefits include rooibos, hibiscus, and chamomile tea.
Last medically reviewed on March 25, 2022
Share this article
OUR BRANDS