Why drinking coffee in the morning can cause nausea

Acid reflux

According to a study published in October 2018 in ‌Scientific Reports‌ , the pH of most coffees ranges from 4.85 to 5.10, which is on the acidic side of the pH scale.

The stomach is an acidic environment, which will increase the acidity in the stomach when drinking coffee. These acids can speed up the digestion of food, which is why some people want to go to the bathroom after drinking coffee.

Enjoying coffee before breakfast may be the reason we feel nauseous

According to the Cleveland Clinic (USA), the acid content in coffee can cause digestive symptoms such as heartburn, acid reflux and bloating. These symptoms are caused by stomach acid refluxing into the esophagus.

Because coffee can cause acid reflux, people with chronic acid reflux (GERD) may be more likely to experience nausea after drinking coffee.

Drink coffee on an empty stomach

The habit of enjoying a cup of coffee right before breakfast can be the reason why we feel nauseous. Some people can even feel severe nausea after drinking coffee on an empty stomach, according to livestrong .

"Coffee is highly acidic, so drinking coffee on an empty stomach can easily irritate the stomach lining, causing nausea for some people," said Pakistani nutritionist Mehak Naeem.

Not only acidity, caffeine in coffee is also the culprit causing nausea. According to a study published in July 2017 in the journal of the National Academy of Sciences of the United States (PNAS), caffeine is a stimulant, promoting the stomach to secrete gastric juice, a liquid that aids in food digestion.

"Caffeine stimulates the release of gastrin. Too much of this substance can cause stomach problems and nausea. So eat a little before drinking coffee," Naeem advises.

Side effects with some medications

Some medications have side effects that interact with the caffeine in coffee, causing nausea. According to AARP, these include antibiotics (like Cipro), some antidepressants (like MAOIs), and asthma medications (like salbutamol and theophylline).

"Nausea is one of many side effects that can occur due to interactions between caffeine and medications. People should always check the label carefully when taking any medication to avoid drug-food interactions," said Jenna Volpe, a nutritionist working in the US.

According to the US National Library of Medicine, if you regularly experience nausea when drinking coffee, you can cut back on your coffee consumption. Accordingly, you can gradually cut back by switching to a low-acid coffee, adding milk or cream to your coffee...

Source link: https://thanhnien.vn/ly-do-uong-ca-phe-buoi-sang-de-bi-buon-non-185240318174048059.htm