Consuming too much caffeine in a short period of time or suddenly stopping caffeine intake can cause nausea. Monitoring caffeine intake and finding energy from other sources is important. Caffeine can also cause anxiety, headaches, and high blood pressure. Pregnant women and those with high blood pressure should avoid caffeine.
Caffeine and nausea are associated in two ways. First, consuming too much caffeine in a short period of time can cause nausea. Conversely, caffeine withdrawal can also cause nausea; for example, if one drinks coffee every day and then suddenly stops for a day or two, nausea is a common occurrence. Moderate amounts of caffeine, in general, shouldn’t cause nausea.
Nausea and caffeine are most often linked when too much caffeine is consumed in too short a time. For example, many people drink coffee in the morning, then they might go to work and have more coffee or even a caffeinated soda, followed by another soda or iced tea a few hours later for lunch, and then an energy drink in the afternoon. Not surprisingly, then, this overload of caffeine in the system leads to nausea. This amount of caffeine can also lead to anxiety, nervousness, headaches, dizziness, and other unpleasant symptoms.
It’s important to monitor your caffeine intake to avoid this connection between caffeine and nausea. Drinking too much caffeine during the day can also make it difficult to sleep at night, which can further perpetuate the cycle. Try to get energy from other sources, such as a healthy diet and regular exercise. If fatigue persists despite getting enough sleep, eating right, and exercising, you may need to visit your doctor to rule out any medical problems.
Caffeine withdrawal is the other primary connection between caffeine and nausea. Even having one cup of coffee or tea a day can lead to withdrawal symptoms if it’s stopped suddenly; these symptoms usually include nausea and headache. Usually, symptoms last only a day or two, but they can last up to a week. Some people find that they become somewhat addicted to caffeine to avoid unpleasant headaches and nausea symptoms.
Other connections between caffeine and nausea are less direct. Since caffeine makes some people feel anxious or jittery, this can lead to nausea as well, even with a small amount of caffeine. Caffeine can also raise blood pressure, which can not only cause nausea, but can also be dangerous for anyone with high blood pressure or heart disease. In general, people struggling with stress, anxiety, or being treated for high blood pressure should avoid caffeine as much as possible; pregnant women are also advised to avoid caffeine.
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