![]() ![]() There is also conflicting research on the relationship between compounds such as chlorogenic acids and trigonelline and the secretion of gastric acid. However, Sebastian points out that because these two compounds are only present in green coffee in small quantities, their impact on stomach health is most likely minimal. ![]() Moreover, Sebastian tells me that other compounds found in green coffee, such as catechol and pyrogallol (which result in bitter flavours), can also increase gastric acid secretion. “These are found on the waxy, outside layer of green coffee beans, and they can increase the secretion of gastric acid in the stomach.” “The focus of our research was on a particular part of lipids found in green coffee called tryptamides, or alkanoyl tryptamides,” he adds. “In our research on this topic, we have mostly studied the chemical composition of green coffee. “The relationship between coffee and stomach problems is often more complex than we think,” he tells me. Sebastian Opitz is the Head of Green Coffee at the Coffee Excellence Centre at the Zurich University of Applied Sciences. Gastritis is when the lining of the stomach becomes inflamed and irritated, which can cause indigestion and nausea. “Low pH levels of coffee can be a problem for those who are susceptible to gastritis,” says Verônica. What about other compounds?Īs well as caffeine, there are a number of other compounds in coffee which can result in digestive problems. Ultimately, in large amounts, this can trigger stomach issues – especially for those who are more sensitive to caffeine. ![]() Moreover, further research concludes that consuming more caffeine can increase the production of stomach acid. When it comes to caffeine intake and digestive problems, a study from 1998 found that caffeinated coffee stimulated the colon 23% more than decaf coffee. “These can include higher levels of fatigue or drowsiness, lower levels of alertness, reduced concentration, mood swings, and headaches – as well as nausea or stomach issues.” “If you drink coffee every day, and then abruptly reduce your consumption, you could experience several withdrawal symptoms,” she explains. Verônica adds that because caffeine is a psychoactive substance, the body can become physiologically dependent on it if consumed on a regular basis. “High doses (between 150mg and 450mg), meanwhile, can increase anxiety, nervousness, and jitteriness.” “When consuming low doses, such as 50mg, caffeine can reduce anxiety,” she says. She explains that because caffeine’s biggest effect is on the brain, it is technically a psychoactive substance. Verônica Belchior is a coffee consultant and Q-grader. However, alongside its positive effects, high levels of caffeine consumption can also have adverse effects on human health. It does this by blocking the effects of adenosine, which is a neurotransmitter that makes us feel tired. It helps to stimulate the brain and central nervous system, and can also help to reduce fatigue and tiredness. One of the most prominent is caffeine.Ĭaffeine is a natural stimulant which is found in coffee, tea, cocoa, and yerba maté, as well as in other food and beverage ingredients. When consumed in larger quantities, there are several compounds in coffee which can cause stomach problems. Which compounds in coffee can cause stomach issues? ![]()
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