5 Side Effects of Drinking Excess Black Coffee

A lot of people start their day with a cup of hot black coffee to get a boost in energy levels. While coffee lover finds this to be a drink from heaven, it can cause harm to the health. There are several side-effects involved in drinking too much of black coffee. The beverage consists of caffeine and no milk or cream. A person addicted to drinking black coffee is also vulnerable to health problems associated with it. The issues and side-effects are visible as the sleep routine and digestion are affected.

5 Side Effects of Drinking Excess Black Coffee

5 Side Effects of Drinking Excess Black Coffee

Some of the most common side effects of drinking black coffee in excess amount are given below:


The beverage contains a large quantity of caffeine and acid, which are known to cause harm to the stomach. It affects the small intestine and the inner lining of the small intestine. It causes cramps and spasms in the abdominal region. Black coffee causes the formation of acidity which leads to the reflux of acid levels and causes acidity again.


The beverage causes a lot of stress as it leads to the release of cortisol, epinephrine, and norepinephrine. Epinephrine is also known as the stress hormone. It triggers stress as well as anxiety. As a result of excessive consumption of black coffee, it becomes very difficult to stay calm.


It also results in the relaxation of the sphincter muscles in the lower esophagus. Food content remains in the stomach as long as these muscles stay firm. However, when it becomes relaxed, it does not do its job well. This results in heartburns which are caused by the erosion of the fragile lining by the action of the hydrochloric acid.

Affects Mineral Absorption Capacity

People who drink too much black coffee have been found to have difficulties in absorbing minerals. It usually happens because of the intake of coffee results in the lowering of the mineral absorption capacity. The minerals that are not smoothly absorbed include zinc, iron, and calcium.

Affects Sleep Pattern

Black coffee is commonly used when people want to be awake and do not want to sleep for a very long time. Having a cup of black coffee before bedtime in the night keeps the mind alert. The person also loses his ability to sleep that night. So, drinking of black coffee prior to sleep is not a good idea.

Coffee not only causes issues with the sleep patterns, but also causes other issues in the body. A person, who is sensitive to caffeine and consumes a lot of coffee experiences nervousness, irritability and restlessness. Four cups of coffee are considered as a lot of coffee.

Other side-effects of drinking black coffee include headache, muscle tremors, and irregular heartbeat. Caffeine also impacts the liver and interacts with alcohol and medications. A person taking high levels of caffeine needs to have a talk with the doctor about the medications and the amount of coffee consumed in a day.

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Team PainAssist
Team PainAssist
Written, Edited or Reviewed By: Team PainAssist, Pain Assist Inc. This article does not provide medical advice. See disclaimer
Last Modified On:January 4, 2019

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