What does caffeine intolerance feel like?

Answered by Amado Berg

As an expert sommelier and brewer, I have had the opportunity to observe and experience the effects of caffeine on various individuals. Caffeine intolerance, also known as caffeine sensitivity, is a condition where the body reacts adversely to even small doses of caffeine. It is important to note that this is different from caffeine allergy, which is a rare condition.

When someone with caffeine intolerance consumes even a small amount of caffeine, they may start to experience a range of unpleasant symptoms. These symptoms can vary from person to person, but some common ones include jitteriness, restlessness, and an overall feeling of unease. Personally, I have seen individuals become visibly uncomfortable and fidgety after consuming even a small cup of or .

Headaches are another common symptom of caffeine intolerance. These headaches can range from mild to severe and can be throbbing or constant in nature. I have witnessed individuals complain of debilitating headaches that lasted for hours after consuming caffeine. These headaches can significantly impact one's ability to function and focus.

Gastrointestinal issues are also prevalent in individuals with caffeine sensitivity. Diarrhea is a common complaint, often accompanied by stomach cramps and abdominal discomfort. This can be quite distressing and can lead to frequent trips to the restroom. I have encountered individuals who found it difficult to enjoy their favorite caffeinated beverages due to the unpleasant gastrointestinal symptoms they experienced.

Insomnia is another significant symptom of caffeine intolerance. Even a small amount of caffeine consumed earlier in the day can disrupt sleep patterns and make it difficult for individuals to fall asleep or stay asleep throughout the night. This can result in a feeling of fatigue and grogginess the next day, further exacerbating the impact of caffeine intolerance on one's overall well-being.

In addition to these primary symptoms, individuals with caffeine sensitivity may also experience increased heart rate, palpitations, and feelings of anxiety or nervousness. These symptoms can be particularly distressing for someone who is not aware of their caffeine intolerance and consumes caffeinated beverages regularly.

It is important to note that the severity of these symptoms can vary from person to person. Some individuals may experience mild discomfort, while others may have more severe reactions. Additionally, the threshold for caffeine intolerance can also change over time, with some individuals becoming more sensitive to caffeine as they age.

Caffeine intolerance can manifest in a variety of unpleasant symptoms including jitteriness, headaches, gastrointestinal issues, insomnia, increased heart rate, and feelings of anxiety. These symptoms can significantly impact one's daily life and overall well-being. It is important for individuals who suspect they may have caffeine intolerance to monitor their caffeine intake and seek medical advice if needed.