Upper Abdominal Pain and Diarrhea After Drinking Green Tea

Dull pain in the upper middle abdomen and diarrhea issues?

It all started on December 2nd when I drank a bottle of Morning Health Double Fiber Green Tea.
After consuming two-thirds of the bottle, I began experiencing diarrhea in the afternoon.
At first, I thought it was just that, but by the evening, I developed a headache and a dull pain in the upper middle part of my abdomen.
That night, when I got home, I felt really uncomfortable due to the headache, so I took Tylenol with a hot drink.
The next morning (December 3rd), I woke up and my headache had improved significantly.
However, I was concerned about a recurrence at work, so I took Tylenol again in the morning.
After that, I didn't have any more headaches, but as of today (December 5th), the diarrhea persists, and the dull pain in my upper abdomen is still there.
The abdominal pain is peculiar; it comes in waves rather than being constant.
Most of the time, I don't feel pain, but whenever the dull pain occurs, it disappears within five seconds.
My appetite is still good; I can eat, and my stomach makes gurgling sounds as if I'm hungry.
Doctor, what could be the reason for my condition? Do I have any illness? Thank you for your response!

Mr. Gao, 10~19 year old female. Ask Date: 2020/12/05

Dr. Wu Zongying reply Family Medicine

Tea and coffee can be irritating to the gastrointestinal tract, and individual reactions vary.
Some people can tolerate high concentrations of tea or coffee, while others may experience stomach pain after consuming even small amounts, especially when taken on an empty stomach.
It is advisable to seek medical treatment.
In the future, when consuming tea or coffee, it is recommended to do so in small amounts, at low concentrations, and to avoid drinking on an empty stomach.

Reply Date: 2020/12/05

More Info

The symptoms you are experiencing, including upper abdominal pain and diarrhea after consuming green tea, can be attributed to several factors related to your gastrointestinal system's response to certain substances. Green tea, while generally considered healthy, contains compounds like caffeine and catechins that can stimulate the digestive system. For some individuals, especially those with sensitive stomachs or pre-existing gastrointestinal conditions, this stimulation can lead to discomfort, diarrhea, and other digestive issues.

Possible Causes of Your Symptoms:
1. Caffeine Sensitivity: Green tea contains caffeine, which can increase gastric acid production and lead to gastrointestinal upset. If you consumed a significant amount of green tea, it may have triggered your symptoms, particularly if you drank it on an empty stomach.

2. Gastrointestinal Irritation: The catechins in green tea can also irritate the gastrointestinal lining in some individuals, leading to symptoms such as abdominal pain and diarrhea. This irritation can manifest as intermittent pain, as you described, which comes and goes.

3. Dietary Factors: If you consumed other foods or beverages around the same time as the green tea, they might have contributed to your symptoms. For instance, high-fat or spicy foods can exacerbate gastrointestinal discomfort.

4. Infection or Gastroenteritis: While your symptoms started after drinking green tea, it’s also possible that you may have contracted a mild gastrointestinal infection or viral gastroenteritis, which can cause diarrhea and abdominal pain. This is especially relevant if you have been in contact with others who are ill or if you have consumed food from questionable sources.

5. Stress or Anxiety: Sometimes, stress or anxiety can manifest physically as gastrointestinal symptoms. If you have been under stress, this could also be a contributing factor.

Recommendations:
1. Hydration: Ensure you stay well-hydrated, especially if you are experiencing diarrhea. Drinking clear fluids, such as water or oral rehydration solutions, can help replenish lost fluids and electrolytes.

2. Dietary Adjustments: Consider avoiding caffeine and high-fiber foods temporarily to see if your symptoms improve. Instead, focus on bland foods that are easier on the stomach, such as bananas, rice, applesauce, and toast (the BRAT diet).

3. Monitor Symptoms: Keep track of your symptoms. If they persist for more than a few days or worsen, it is essential to seek medical attention. A healthcare provider may recommend tests to rule out infections or other gastrointestinal disorders.

4. Consult a Doctor: Given that your symptoms have persisted for several days, it would be wise to consult a healthcare professional. They may perform a physical examination and possibly order tests such as blood work or stool analysis to determine the underlying cause of your symptoms.

5. Avoid Trigger Foods: If you suspect that green tea or other specific foods are causing your symptoms, it may be best to avoid them in the future. You can gradually reintroduce them to see how your body reacts.

In conclusion, while your symptoms may be related to your recent consumption of green tea, they could also stem from other gastrointestinal issues or dietary factors. Monitoring your symptoms and consulting with a healthcare provider will be crucial in determining the exact cause and appropriate treatment.

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