Side Effects of Black Tea5 min read

Be Aware! with lots of amazing benefits Black tea also have a DARK SIDE

Side Effects of Black

Side effects of black tea – Tea is a drink that refreshes you and also offers many health benefits. It has amazing flavor and rejuvenates your energy. This is one of the reasons why tea is such a popular beverage all across the globe.

Unlike coffee, you can find many varieties of tea, such as green tea, yellow tea, Oolong tea, but the most famous one is black tea. Undoubtedly, black tea has the most intense flavor and also unveils to you innumerable benefits. Having said that, it is also important to highlight that there are some side effects of black tea.

Also Read: Green Tea for Hair: It’s Risks, Benefits and More

If you are someone who cannot resist this cup of tea, then it is time you take a look at black tea disadvantages, but before that try to learn what black tea is.

What is Black tea?

Made from Camellia sinensis plant, black tea is a highly powerful tea. It has more intense flavor as it is oxidized more than the other types of tea, such as green tea, yellow tea, Oolong tea, etc. In China, this tea is popularly known as “hongcha” and is produced by first withering the leaves of the tea after harvest, then crushing, tearing or curling the leaves. Once this is done, then the leaves are oxidized in a controlled temperature, which is also known as fermentation step.

Also Read: Green Tea for Constipation

However, it is important to understand that in reality, no fermentation takes place. The only thing that happens here is oxidation which gives it so intense color and flavor. After this, the leaves are dries, to ensure that the flavors of the tea produced during oxidation get retained.

What does black tea contain?

Black tea even after going through complete oxidation has many nutrients present in it, such as tannins, Theaflavins, flavonoids, minerals, vitamins, potassium, caffeine, fluoride, glucuronic and lactic acid, antioxidants, etc. All these things have their own benefits and can have a good impact on your health. Nevertheless, it is important to understand that the high dosage and the presence of high level of caffeine can add to its side effects.

Also Read: Green Tea for Pregnancy: Find Benefits, Risk & More

What are the side effects of black tea?

There are some Black tea side effects that can lead to serious problems, whereas some adverse effects can be controlled by taking less amount of black tea.
Cardiovascular Disorders

If you are a patient recovering heart attack, then you must at any cost avoid taking black tea. This beverage can be really unhealthy for you and that is why doctors ask you to avoid it. The problems related to your heart, such as paroxysmal tachycardia or cardiac asthma can get worsened by the intake of caffeine, so any drink having a high concentration of caffeine like coffee should also not be taken. This stimulant can exert an effect on your nervous system, thereby increasing your heart rate and blood pressure.

Also Read: Green Tea Face Mask and It’s Benefits

Can lead to gastric ulcers if taken empty stomach

Your stomach is empty in the morning and when you take black tea then it stimulates gastric acid. This can lead to the problem gastritis or gastric ulcers. That is why patients of stomach ulcer are strictly advised to not consume black tea. Even you can get acid reflux in more consumption of black tea. The major reason behind this is again the presence of caffeine in it. In fact, you must avoid any such drink, like green tea, coffee, Oolong tea, etc. empty stomach.

Less absorption of iron in the body

Another black tea side effect is that the consumption of black tea can inhibit the absorption of iron in the body. The people who are anemic must avoid taking tea with meals as it can decrease the absorption of iron by 50%. This is majorly due to the presence of tannins in the black tea and that is why you must take less black tea if you have an iron deficiency problem.

Can enhance the problem of constipation

You might be amused to know this but in reality, the chances of facing this problem are quite high among those who take a lot of black tea because there is a belief that tea or coffee helps in softening the stool. However, this is not true and the reality is absolutely opposite of this. The presence of tannins plays a crucial role in enhancing the problem of constipation. It makes your body store precipitate and a lot of waste products. That is why when you take an excess of black tea then you face the problem of constipation regularly.


If you are someone who takes a lot of black tea, then it is time you think twice before consuming this drink so much. Not only excess of black tea can have an adverse effect on your central nervous system, but the presence of caffeine in it can also stimulate your digestive system. This can lead to diarrhea and can trouble you a lot.

Also Read: Benefits of Green Tea for Skin


Excess consumption of black tea can sometimes cause miscarriage. This is one of the reasons why pregnant women are asked by their gynecologists to avoid black tea. Gain the caffeine present in it leads to this problem in addition to the other problems, such as insomnia, high blood pressure, varicose veins, upset stomach, acid reflux, and palpitations.

By now, you must have got the answer to the questions – What are the side effects of black tea? However, it is necessary to point out that all the major problems of black tea are related to caffeine and tannins. This means that if you take any other beverage too, such as coffee in lieu of this drink, the problem will remain the same (coffee contains more caffeine than tea).

That is why you are advised to take black tea in a moderate way. Excess consumption of anything is bad and this is also true for black tea. If you take single or two small cups of black tea in a day then you can remain free from the side effects of black tea.


Please enter your comment!
Please enter your name here