Why Does Coffee Make Me Sick?

Last Updated on August 4, 2021 by Paul E Nicholson

Are you a fan of coffee but hate the effects of how you feel after taking it?  You are not alone neither are you sick.  Though coffee in recent has been linked to some positive trends such as reduced cancer risks, an efficient metabolism, and enhanced liver health, some people have experienced its negative sides. This article seeks to explain the important question that you have been asking, “why does coffee make me sick?”

What are the components found in coffee?

Most important is to understand which components that are in coffee. This will help you understand it better.


Caffeine is a major pharmacologically active compound found in coffee.


It has chromogenic acids and melanoidins which help deactivate oxidants.


High consumption of diterpenes, cafestol, and kahweol found in coffee can raise the levels of serum and cholesterol.

Then why does coffee make me sick?

The Coffee Acid

Depending on the coffee roasting there always remain some acids that contribute to the overall taste of the brew.  If you drink on an empty stomach there is a likelihood of feeling sick. The acids will irritate your stomach lining which will lead to nausea feeling. The digestive system is oiled by acids and if the acid seems to be a problem then you should find low acidity or stomach-friendly coffee.  Brewing in cold water as well has been found to reduce acid levels.

Artificial and zero-calorie sweeteners

It has been discovered that natural sweeteners act as a catalyst stirring up the gut bacteria in the stomach. The results for this may lead to messy situations affecting how the body functions work. To ensure that that this is not the case you can experiment with other alternatives such as cocoa. Alternatively, you can try using coffee that has natural sweeteners.

Low fat and artificial creamers

These in addition to the non-dairy creamers are not the best option even to the artificial sweeteners. They tend to include harmful ingredients, for instance, high fructose corn syrup, thickeners, and hydrogenated oils among other harmful ingredients.

Sensitivity to caffeine

Before going further, caffeine in your cup prompts the body to release more acid. Caffeine in your stomach pushes the digestive system to work faster. Researchers have argued that it is a lie that the body wants to flush caffeine as soon as possible. Therefore it may bring some discomforts. On the other hand, such discomfort has been seen as counteract of constipation.

Drinking on an empty stomach

Coffee is such a rich and bold drink. As discussed above it has some chemical makeup that can cause issues on the body if taken on an empty stomach. It will lead to upsetting your stomach. You can take notes on how you feel after taking in different types of breakfast. For instance, take a heavy breakfast with coffee. You will see some differences.


Heavy drinkers of coffee will definitely get addiction. Caffeine leads to habit-forming with a review suggesting that it triggers brain cells just as cocaine does. However, it does not cause the classic addiction that these hard drugs do. Moreover, it plays a role of dependency based on the caffeine frequency intake. So, when one has not taken coffee as frequently as he does, there may be some signs of weakness. You become dependent on its effects.

Quick heart rate

High caffeine intake causes the heartbeat to increase. A case study on a woman revealed that an attempt to overdose on caffeine in an attempted suicide caused a rapid heart rate. Besides, it was found that it caused serious health issues such as kidney failure.  If you notice that there are changes in the heart rate or the rhythm, reduce your coffee intake.


Caffeinated drinks such as coffee and tea are known to boost energy levels. But, they can cause an opposite effect after the caffeine has left your system. Therefore it causes you to drink lots of coffee all day to sustain this energy level. To maximize these effects and avoid rebound fatigue it is recommended that it be taken moderately.

Urgency and frequency in urination

This is quite common and affects due to the high intake of coffee. Research that focused on older people showed that there was a development of incontinence. This was seen in people that have healthy bladders.

Once you notice that there is frequent urination after taking coffee frequently than when you have not taken it be alarmed. Cut down your intake and monitor if the symptoms will improve.

Muscle breakdown

Rhabdomyolysis which refers to damaged fiber entering the bloodstream is a serious condition. It causes kidney failure. It is caused by trauma, drug abuse, muscle strain and bites from poisonous snakes can also be caused by a large amount of coffee intake.  If one consumes a large dosage of caffeine within a short period could lead to the risk of rhabdomyolysis. You should limit your intake to just 250mg per day.

Thinning the bones

Drinking caffeinated coffee will increase the amount of calcium that could be flushed from urine. This can weaken the bones. For persons who have osteoporosis, they are required to limit caffeine intake to less than 300mg in a day. They can as well take calcium supplements.

Alterations with medicine

There are some drugs that will cause alterations if taken with coffee. Stimulant drugs taken with coffee will cause too much stimulation.  Since the body breaks down caffeine to get rid of it, taking alcohol may complicate matters. Alcohol will reduce this process significantly.


It could be a strange thought to believe that caffeine is the cause of nausea but the human body works mysteriously.  Besides keeping you awake it helps get your digestive system moving.  This could be a reason why you are feeling sick. If not then think about how you are drinking your coffee. Ensure that you accompany it with something healthier. However, generally, coffee is safe for quite a number of adults. Drinking more than 6 mugs in a day may cause caffeine-related symptoms such as anxiety.

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