Herbal Tea Facts, Health Benefits And Side Effects

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Herbal teas— sometimes called tisanes, hot beverages made from infusions of herbs, fruits, and spices in hot water— are as close as many people come to a “natural” health product.


Herbal products are often marketed as natural alternatives to pharmaceuticals. They’re perceived as safe for children and the elderly, who may be less able to process the active ingredients found in prescription drugs. 

With this image of safety and simplicity, it’s not surprising that herbal tea is one of the most popular food supplements on the market today. Many American adults drink herbal tea regularly. But do all those little jars with their aromatic labels offer real benefits?  

Herbal tea nutrition facts vary depending on the ingredients, but they share common health benefits. 

If it is the first time that you are trying it, you will discover that it has a pleasant taste too. So without further ado, here are nine reasons why these infusions are worth trying.

Herbal Tea Health Benefits

Immune-Boosting Properties

Although the names of herbal teas sound mysterious and exotic, most of them are made from surprisingly simple ingredients you can find in your local supermarket. 

Many of these formulations have been used for decades as a natural remedy. The herbal infusions used to make this beverage are steeped or infused in hot water, which extracts their immune-boosting properties.

Some herbal teas that are popular for helping our bodies fight off disease are:

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  • Licorice Root

The active ingredient in licorice is called glycyrrhizic acid, which has antiviral benefits and can soothe an upset stomach (2). Recent research suggests it may even be useful against the common cold (23).

Read More: White Peony Tea Facts, Health Benefits And Side Effects

  • Echinacea

This tea is made from echinacea, a flower with both immune-boosting and anti-inflammatory properties. Some studies suggest that drinking this tea three times per day for two weeks may increase your resistance to the common cold virus (8)

  • Elderberry

For centuries, the Chinese have used this shrub to treat coughs and respiratory infections. It works by thinning mucus, which allows you to expel bacteria more quickly. Preliminary research suggests that elderberry extract may even help control the flu virus (9)! 

  • Ginseng

Another famous immunity-boosting tea, ginseng, has been used in Chinese medicine for centuries. Some modern research confirms that it can fight viruses and reduce your chances of catching a cold. It may also have some anti-cancer properties, but more research is needed to be sure (4).

  • Dandelion Tea

Dandelion tea is made from the roots of this common weed. You can often find it growing in your backyard! The tea provides a mild diuretic effect and some nutrients which may help prevent chronic kidney disease. Although dandelion powder can do even more for your kidneys, eating too much of it at once could lead to an upset stomach (24).

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  • Peppermint

The herb peppermint has long been used to alleviate nausea or morning sickness during pregnancy, but its benefits don’t stop there! Drinking 2 cups of peppermint tea per day for several weeks has been shown to speed up wound healing and reduce inflammation associated with arthritis and asthma (18).

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Improved Digestion

Digestion is a complicated process that needs to be perfect for you to enjoy good health. The breakdown of the foods into absorbable nutrients is vital for you to maintain your energy levels throughout the day and ensure that your body gets all the nutrients it requires. 

Herbal teas are among these methods where they help in improving digestion by introducing essential chemicals that enhance the digestive process to ensure that you get back on track.

Some of the best herbal teas for this function include:

  • Hibiscus Tea

Hibiscus tea could be the herbal equivalent of an antacid. Hibiscus tea has been shown to buffer the effects of stomach acid, which is vital for proper digestion. This means your body is better able to maintain its levels of stomach acid (which helps digest food) over time without becoming too acidic or alkaline (17). It also means you are less likely to develop conditions like ulcers or GERD (gastroesophageal reflux disease), both of which are associated with excess stomach acid production.

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  • Ginger Tea

Ginger tea is ideal for digestion because it has been shown to reduce spasms in the digestive tract. It also reduces inflammation associated with many gastrointestinal disorders, which makes it an effective treatment option for diarrhea and other digestive conditions (12).

  • Peppermint Tea

Peppermint tea acts as a carminative herb, meaning it helps to eliminate gas from the stomach and intestines to prevent bloating, burping or discomfort after you eat. Peppermint is also known to help cleanse your system by flushing out toxins that are often responsible for intestinal discomfort. This means peppermint can be beneficial if experiencing nausea or vomiting due to poor digestion (19). 

  • Chamomile Tea

Chamomile tea is ideal for soothing muscle spasms of the digestive tract, which makes it an effective treatment option for colitis and other bowel disorders (5).

  • Fennel Tea

Fennel tea is ideal for digestion because of its antispasmodic properties. These properties allow it to relax and soothe your intestinal muscles to prevent spasms that can lead to discomfort or bloating after eating. Fennel tea also relieves gas when consumed regularly over time (5).

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Improved Brain Function

Herbal teas are popularly reputed to be of benefit for brain function (e.g., anti-anxiety, memory enhancement). The common assumption is that the herbs contained within these beverages exert some kind of biological effect on the physiology of neurotransmission in the brain. 

Some of the herbal teas known to improve brain function include:

  • Ginkgo Biloba Tea

Ginkgo Biloba is the “king” of herbal teas, with many important benefits for brain function.  It’s used to treat neurodegenerative diseases such as Alzheimer’s disease and it also has memory-enhancing effects. It contains powerful antioxidants which protect brain cells from free radical damage (10).

Read More: Pomegranate White Tea Facts, Health Benefits And Side Effects

  • Rooibos Tea

A 2012 cross-sectional randomized clinical trial concluded that rooibos tea has anti-stress and mood improving effects in humans. The study also suggested antidepressant effects which are due to the high flavonoid content of Rooibos tea. It’s possible these benefits are mediated by an increase in brain alpha wave activity, which may improve cognitive function while decreasing depression. Another mechanism is that antioxidant-rich herbal teas like Rooibos protect against neurodegeneration by reducing free radical damage to cells via the Nrf2 pathway (21).

It’s possible this mechanism could explain the neuroprotective effects of herbal teas like Rooibos. 

  • Ginger Root Tea 

Both ginger and its active component gingerol have been implicated as cognitive enhancers. Both human and animal studies suggest that the beneficial effects are likely due to antioxidant, anti-inflammatory, anti-stress, cognitive enhancement, neurogenesis (formation of new neurons), increased cerebral blood flow, inhibition of enzymes that degrade brain neurotransmitters (12).

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Ease Pain And Soreness

A cup of herbal tea may be the most comforting way to end a long day. A hot drink can help you relax, de-stress and ease some pain, too. Some studies suggest that some herbs can reduce inflammation (20). And drinking beverages made of these helpful plants may be an effective way to manage certain types of chronic pain. 

Here are some pain-relieving varieties that could give you some much-needed comfort.

  • Turmeric Tea

Curcumin, the substance that gives this spice its bright color, may help to reduce pain caused by osteoarthritis. Turmeric is often combined with black pepper in recipes because it’s believed that piperine—a compound found in black pepper—increases the bioavailability of curcumin (7). 

  • Feverfew Tea

People who drink feverfew tea may experience reduced pain associated with migraine headaches (11).

  • Chamomile Tea

When consumed regularly, chamomile tea might help people with osteoarthritis-related knee pain. A study showed that chamomile extract eased patients’ knee pain and stiffness better than a placebo did. It’s unclear exactly how it works, but scientists think the anti-inflammatory properties of this herb play a role. Chamomile is also sometimes used to treat digestive disorders such as ulcers and stomach pain (5).

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Many herbal teas are diuretic, meaning they encourage fluid loss through urination. This can assist the body with removing toxins and fighting various kinds of infections because harmful microorganisms often attach themselves to unneeded matter inside your body (14). 

So, by drinking these types of teas, you may be able to flush many bacteria, fungi, viruses, etc. out, each time you go to the bathroom. As a bonus for drinking these beverages regularly, they will likely reduce the amount of water weight gain you experience due to water retention caused by consuming salt and other types of sodium.

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Bone Health

Drinking herbal teas, such as those made from horsetail or nettle, can help to strengthen your bones and keep them healthy. This is because many of these herbs contain high amounts of minerals that are essential for promoting healthy bone development and maintenance (14). 

Drinking tea made from these ingredients regularly will ensure that you get enough calcium, magnesium, potassium, phosphorus, silicon, manganese, copper, zinc, iron, and selenium in your diet each day. Flavonoids found in green tea have also been shown to fight the progression of osteoporosis (13).

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Reduced Blood Pressure

Some studies suggest that drinking certain types of herbal tea over a long enough period can help to reduce high blood pressure in some people (14). Such include lemon balm tea, guarana, and valerian root.  

In general, though, drinking tea does not have a massive effect on your BP levels when compared to other lifestyle changes you could make. If you want to maintain healthy blood pressure levels through drinking tea, it’s probably best for you to drink the types that have been associated with a reduction in hypertension levels often.

Improved Heart Health

Herbal teas made from ingredients such as fennel seed, cinnamon bark, and chamomile flowers can be beneficial for your health because they contain various nutrients that have been shown to improve heart health by increasing circulation and helping your body break down fats more efficiently (14). 

In addition, these herbs may fight bacteria and fungi that can lead to infections in the cardiovascular system, a common cause of a heart attack in some people (14). 

Cancer Prevention

There is evidence to suggest that drinking certain kinds of herbal tea, such as chamomile flower tea, can help reduce your risk of developing various types of cancer (14). 

This is because these beverages often contain flavonoids and antioxidants, two compounds that have been shown to reduce inflammation in the body and lower cholesterol levels (14). 

In addition, many varieties of herbal tea are rich in catechins, another type of antioxidant that has been linked to reduced risks for colon cancer when consumed regularly.

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Too Much Herbal Tea Side Effects

There are several herbal tea side effects worth noting before you make these beverages a part of your diet: 

Liver Damage

Liver damage, as well as other major organ system damage, can occur with drinking excessive amounts of certain herbal teas (16). The most common of these teas known to cause liver damage include comfrey root and comfrey leaf, chaparral (found in many products formulated for weight loss), germander (comparable to “complementary therapy” or “homeopathic therapy”), and kava. Each of these is commonly used in herbal tea blends and may cause permanent damage to the liver with only a few uses.

Abnormal Heart Rhythms

Certain herbs that belong to the Valerian family (which includes valerian root, lemon balm, etc.) have been shown to change heart rhythms when taken orally or applied topically (6). These should not be included in an herbal tea blend.

Kidney Problems

Renal disorders of various types, including glomerulonephritis, have been associated with consuming herbal tea regularly. These changes can occur in people who take these beverages for extended periods and may result in the need for kidney dialysis or transplantation (1). In addition to different types of renal disease, there is also some evidence that suggests drinking tea with certain herbs may increase your chances of developing bladder cancer (22).

Harmful Interactions With Prescription Medications

Several herbs have been shown to interact with prescription medications in a harmful way. When making your herbal tea blends, you should always check to see if any ingredients in your mix could cause a reaction when taken with the prescription medications you take. More often than not, this type of reaction is mild and has little effect on your overall health, but it’s important to understand that interaction could occur.

Symptoms of a bad reaction include nausea, vomiting, stomach pain, diarrhea, fatigue, agitation, difficulty breathing or shortness of breath, mental confusion or delirium, seizures, coma, and rash (15). 

The Bottom Line  

While herbal teas conjure up images of weight loss, relaxation, and even protection against cancer and other deadly diseases, they can also cause a variety of health problems. Because these beverages are relatively unregulated, the way standard teas such as green tea and black tea are regulated, it’s critical to understand the risks involved with consuming some ingredients before adding them to your regular diet.


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