Black tea is one of the most enjoyed beverages worldwide. From China to the United Kingdom, black tea has become an integral part of cultural events, political summits, and daily life. Drinking tea is an excellent way to relax, but its properties also offer a wide range of health benefits. It has been shown that black tea protects heart health and may even prevent cancer.
This healthy elixir is a delicious drink that not only tastes good but can also make you feel good. The earthy flavors appeal to the taste buds while the rich aromas soothe stress after a long day. Read on to learn more about black tea and how you can incorporate this beverage into your daily routine.
Breakdown of Black Tea
Black tea is a true tea like green tea, white tea, and oolong tea. This means it is made using the leaves from the tea plant known as Camellia sinensis. All true teas come from the same leaves. They develop unique flavors due to the production process. Black tea is the most processed of the true tea leaves. It is oxidized longer and contains the highest amounts of caffeine. The caffeine content of most black teas is about half of what you would find in a standard cup of coffee.
Production Process
Tea leaves are hand-harvested and wilted on large bamboo mats. Once the leaves become soft, they are rolled into distinctive shapes and gently bruised. This releases enzymes that react with oxygen during the next step. Black tea leaves are then oxidized, a process where the leaves are exposed to air, causing the leaves to turn a dark brown or black color. Once the leaves reach their peak, tea masters apply heat to stop further oxidation. The leaves are sorted and packaged for sale.
Types
There are many types of black tea. The varieties are most often characterized by where they are harvested. The most common black tea varieties include Assam and Darjeeling from India or Ceylon from Sri Lanka. Black tea is also a common and very popular tea as a breakfast tea. Earl Grey is an English black tea infused with bergamot for a citrus flavor.
Flavor and Aroma
In general, black tea is one of the strongest-tasting teas. It has a strong and rich flavor often compared to a mild cup of coffee. The flavor of a black tea depends largely on where it was grown, how it was harvested, and how it was produced. It’s no coincidence that enthusiasts enjoy black tea in a Cast Iron Teapot. The flavors of black tea range from savory to sweet and can be malty, smoky, earthy, and nutty. Some blends feature hints of citrus, caramel, and honey and can range from amber to dark brown.
Health Benefits of Black Tea
May Help Treat Cancer
The National Cancer Institute lists several trials and studies demonstrating tea’s potential in cancer prevention. Black tea contains strong concentrations of antioxidants known as polyphenols. These compounds have been linked to a lower risk of some types of cancer. The most potent of these antioxidants is known as EGCG or epigallocatechin gallate (1).
A study published in Anticancer Agents in Medicinal Chemistry found that this antioxidant protects cells from mutations that can cause cancer. This EGCG was also able to induce the death of cancer cells in certain conditions. Research shows that black tea is most effective in preventing breast cancer, ovarian cancer, and lung cancer (2).
A second study published in the European Journal of Cancer found that tea polyphenols known as theaflavins can prevent the spread of breast cancer cells. The study was conducted in vivo and in vitro using both rat and human cancer cells. Research showed that theaflavins work at a cellular level to prevent cancer cell reproduction and tumor growth (3).
Drinking black tea should not be considered a replacement for standard cancer treatment. When combined with a healthy lifestyle, it may help prevent cancer cells from forming or reproducing. More research is needed, but to date, black tea has shown potential health benefits in cancer prevention.
Promotes Heart Health
One of the most recognized benefits of tea is its ability to protect heart health. Studies have shown that black tea can help prevent strokes and may also lower cholesterol levels. Black tea may help protect against heart disease by lowering blood pressure. Drinking tea every day may help ward off heart attacks and other cardiovascular conditions.
Research published in Preventative Medicine studied the effects of black tea on blood pressure. The randomized controlled trial involved an experimental group that consumed black tea 3 times daily for 12 weeks. Results were compared to a placebo group that only drank hot water. It was found that black tea reduced blood pressure and triglyceride levels in patients. Black tea decreased low-density lipoprotein or LDL cholesterol levels by 16%. It also raised high-density lipoprotein or HDL cholesterol levels by 20% (4).
Another review published in the European Journal of Clinical Nutrition examined research on black tea and heart health. Researchers analyzed clinical trials published from 1990 to 2004. They found clear evidence that long-term consumption of black tea helped reduce the risk of heart disease. The minimum effective dose was found to be 3 cups of black tea per day (5).
A meta-analysis published in Stroke analyzed the ability of black tea to prevent strokes. Researchers reviewed data from 9 distinct studies involving nearly 200,000 participants who experienced fatal or non-fatal strokes. The review revealed that people who consumed at least 3 cups of black tea daily had a 21% lower risk of stroke than those who consumed less than one cup per day (6).
Protects Against Diabetes
Black tea has displayed powerful effects when it comes to preventing conditions that can lead to type 2 diabetes. High blood sugar levels can cause diabetes as well as other diseases such as cardiovascular disease, obesity, and kidney failure. In America, a sugar-laden diet has increased diabetes rates over the last decade (7). Consumption of black tea may help lower blood sugar levels, reducing diabetes risk.
The issue with sugar comes down to how the body stores and reacts to eating. When you eat sugar, your pancreas releases a hormone known as insulin. Insulin transports sugar to muscles where it is converted to energy. The issue arises when you eat too much sugar. Excess sugar is stored as fat and high sugar intake can cause insulin resistance and other problems.
Research shows black tea can improve the body’s use and tolerance of insulin. A study published in the Journal of Agricultural and Food Chemistry looked into these effects. Tannins, EGCG, and theaflavins were found to increase insulin potential by 15 times (8). A second study found black tea extract helped promote insulin secretion. This can assist diabetic individuals who have difficulty producing and tolerating insulin (9).
Boosts Digestive System
Black tea is a popular beverage during meals in Asia. Traditional medicine has argued that tea helps streamline digestive processes and relieve digestive problems. Black tea may help prevent bacterial growth that causes ulcers and may help relieve symptoms like diarrhea.
A study published in Food Reviews International examined black tea’s effects on gut health. Results showed that black tea helps promote the growth of healthy bacteria while inhibiting the proliferation of harmful bacteria (10). Black tea was particularly effective in preventing Salmonella and Helicobacter pylori, responsible for stomach ulcers.
Black tea may also help soothe stomach aches and diarrhea. Black tea contains compounds known as tannins, which have an astringent effect. This helps reduce inflammation and irritation that can cause loose stools. A study published in the Journal of Evidence-Based Complementary and Alternative Medicine examined black tea’s effects on diarrhea in 60 patients aged 2 to 12 years. The randomized controlled trial found that black tea exhibits antidiarrheal properties and helps soothe upset stomachs (11).
Packed with Antioxidants
Black tea is rich in antioxidants which help improve overall health. Antioxidants work to eliminate free radicals that can cause damage to the immune system and other bodily processes. Free radicals are toxins caused by environmental factors such as pollution. They can also be caused by an unhealthy diet and smoking. Free radicals damage at the cellular level and have been linked to cancer and other diseases. Tea antioxidants rid the body of these toxins.
May Increase Energy and Focus
Black tea is considered one of the most caffeinated types of tea. It can give you a boost of energy in the morning to start your day or help you get through an afternoon slump. Black tea also contains an amino acid known as L-theanine. This amino acid helps deliver caffeine more smoothly. This means you will not experience the spikes and crashes associated with coffee consumption.
A scientific review published in Nutrition Reviews examined black tea’s use in boosting energy levels. Researchers found that the combination of L-theanine and caffeine in black tea allows for improved focus and a better ability to avoid distraction. Study participants found that energy and alertness lasted longer and were smoother than those provided by caffeine alone (12).
A second study published in Appetite studied the effect of black tea on attention. Researchers conducted two double-blind, placebo-controlled studies. Participants consumed black tea made from tea bags or a placebo created from colorings and flavors. Participants who consumed black tea performed better on tests analyzing the ability to switch between tasks. They also demonstrated higher levels of auditory and visual attention compared to the placebo (13).
Our English Breakfast Black tea is a classic favorite! Mix it with milk, lemon, and a sprig of mint to start your day.
Protects the Brain
Daily consumption of black tea can help protect the brain against degenerative neurological diseases like Parkinson’s and Alzheimer’s disease. These effects are due to the high concentration of antioxidants in black tea. Drinking tea can also help reduce stress and prevent psychological disorders such as depression.
A study published in Psychopharmacology examined tea’s effects on stress levels. The study involved 75 healthy participants who drank black tea over six weeks. The experimental phase was followed by a six-week placebo phase. Participants demonstrated significantly lower cortisol levels during the tea phase of the trial. Cortisol is the human stress hormone that can cause feelings of anxiety and agitation. Participants also felt more relaxed when consuming black tea, even when exercise elevated their heart rate (14).
The Side Effects of Black Tea
Black tea has very few side effects when consumed in moderate amounts. Drinking more than 4 to 5 cups of black tea per day may lead to negative side effects. This is largely due to black tea’s caffeine content. Excessive caffeine can cause headaches, irregular heart rhythms, nausea, and anxiety. Choose decaffeinated black tea if you are sensitive to caffeine or want to drink several cups per day.
Is Black Tea Good for You?
Black tea is one of the most consumed beverages in the world. Its bold flavor makes it a popular alternative to coffee. Black tea leaves offer the most health benefits as they consist of whole leaves. Tea bags contain broken leaves, dust, and fannings of black tea leaves and do not always offer the same health quality. Stick to brewing your black tea with high-quality loose leaves whenever possible. Enjoy delicious bold flavors and drink black tea to boost your health.