Can being exposed to heat cause diarrhea?

Oct 13, 2022 Source: Cainiu Health
Dr. Zhao Haiming
Introduction
Heat exposure may reduce the secretion of gastric juice and stomach acid, leading to decreased digestive capacity and accumulation of food residue in the intestines. Additionally, high temperatures can reduce intestinal digestive fluids, causing intestinal contents to ferment and irritate the intestinal wall, resulting in diarrhea. Moreover, diarrhea may also occur if heatstroke develops after heat exposure. In such cases, probiotics may be taken as directed by a physician to help improve symptoms.

Diarrhea may occur after heat exposure, primarily due to high temperatures affecting digestion. Prolonged fermentation of intestinal contents irritates the intestinal lining, leading to increased intestinal motility and resulting in diarrhea.

Heat exposure is often caused by excessively high ambient temperatures. Under such conditions, patients may experience reduced secretion of gastric juice and stomach acid, which decreases gastric digestive capacity. This leads to accumulation of undigested food residues in the intestines. Combined with decreased intestinal digestive secretions due to high temperature, intestinal contents are prone to fermentation, irritating the intestinal wall and causing osmotic diarrhea. Additionally, if heat exposure causes electrolyte imbalances and symptoms of heatstroke, diarrhea may also develop, possibly accompanied by dizziness, headache, fatigue, and other abnormal symptoms.

When diarrhea occurs due to hot weather, patients can usually take probiotics under a doctor's guidance to help regulate intestinal flora and improve symptoms. Commonly used medications include compound *Lactobacillus acidophilus* tablets and *Bacillus subtilis* bifidus live bacterial granules.


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