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Herbal teas are popular for their variety of flavors and because most are naturally caffeine-free. Strictly speaking they are not "tea" at all, since they are not made from the Camellia sinensis plant. Instead, they are infusions of flowers, leaves, roots, seeds or fruit. Some have been studied for possible heart-related effects, while others are simply pleasant, calorie-free drinks.
Hibiscus
Hibiscus tea is made from the dried deep-red flowers of the hibiscus plant. It has a tart, fruity flavor and a beautiful ruby color. Several small clinical trials have reported that drinking hibiscus tea daily led to modest reductions in blood pressure in people with mildly raised readings. Researchers think its natural plant pigments, called anthocyanins, may play a role.
These results are promising but come from relatively small, short studies. Hibiscus may also interact with some medications, including certain blood pressure and diabetes medicines. It is not recommended during pregnancy without medical advice.
Rooibos
Rooibos, also called red bush tea, comes from a shrub native to South Africa. It is naturally caffeine-free and has a sweet, slightly nutty taste, which makes it a good choice for people trying to cut back on sugar. Rooibos contains its own antioxidants, and early research has explored possible effects on blood vessels, but human evidence is still limited. It is best enjoyed as a tasty, caffeine-free alternative.
Chamomile
Chamomile is made from daisy-like flowers and is widely used as a calming evening drink. Its potential heart benefit is indirect: good sleep and lower stress both support heart health, and many people find a warm cup of chamomile helps them unwind. People with allergies to ragweed or related plants should be cautious.
Peppermint and ginger
Peppermint tea is refreshing and caffeine-free, and many people use it after meals. Ginger tea, made from fresh or dried root, has a warming, spicy flavor. Neither is a heart remedy, but both are flavorful alternatives to sugary drinks.
Things to keep in mind
- Quality varies. Herbal products are not regulated in the same way as medicines, so the strength can differ between brands.
- Interactions are possible. Some herbs can affect how medications work. This matters especially for blood thinners, blood pressure medicines and diabetes medicines.
- More is not always better. Drinking very large amounts of any herbal tea is not recommended.
- Watch the blends. Some fruit and herbal blends contain added sugar or sweetened dried fruit.
Building a balanced mix
Many people enjoy true tea during the day and switch to herbal tea in the evening. This keeps the ritual going while avoiding caffeine at bedtime. Rotating different herbal teas also adds variety without extra calories.
A word of caution
Herbal teas can be a pleasant part of a heart-healthy routine, but they should not replace medical treatment. If you have high blood pressure or a heart condition, or you take regular medication, talk to your doctor or pharmacist before drinking herbal teas such as hibiscus every day.
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