Scientists conducted experiments and found that negative emotions lower the pH of gastric juice, thereby increasing its acidity. During the experiments, the researchers asked participants to swallow a small “pill,” which is actually a sensor that measures pressure, temperature, and acidity in the gastrointestinal tract. The device transmitted this data to a PC.
During the experiment, people were shown short videos that evoked different emotions in them: from happiness and sadness to disgust and fear. In the case of the last two reactions, the activity of the muscles of the gastrointestinal tract increased, the pulse and respiratory rate increased, and the secretion of gastric juice increased.
Source: Ferra
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