Drinking black coffee on an empty stomach is harmful to the body, including excessive excitation of the nervous system and stimulation of the gastrointestinal mucosa, mainly in the caffeine-sensitive population.
1. Excitement of the nervous system: drinking black coffee on an empty stomach will make the caffeine over-excitement of the central nervous system, which will lead to epigastric discomfort and nausea and other symptoms; when serious, it will be accompanied by dizziness and panic and other symptoms.
2. Stimulate gastric mucosa: For people with basic gastric diseases, such as gastritis, gastric ulcer patients, the caffeine in black coffee will directly stimulate the gastric mucosa, which may aggravate the damage to the gastric mucosa;
It will also stimulate the glands on the gastric mucosa, so that the secretion of gastric acid or protease and other digestive juices to increase and thus aggravate the damage to the gastric mucosa, and even the gastric mucosa will appear localized congestion, erosion and other inflammatory reactions.
If drinking black coffee appeared obvious nausea, abdominal pain and bloating and other reactions, it is recommended to consult a doctor for symptomatic treatment in order to prevent the symptoms from worsening.