Now, let us look into the wisdom of Donguibogam through the eyes of modern medicine. Travelers' diarrhea refers to diarrhea that occurs during travel, mainly caused by infections from bacteria or viruses through food or water in an unfamiliar environment. The most common causative bacterium is enterotoxigenic Escherichia coli (ETEC), a type of Escherichia coli, and various bacteria such as Salmonella, shigella, and Campylobacter, as well as viruses like norovirus, can also be culprits. These pathogens cause inflammation in the intestinal mucosa, secrete toxins, interfere with water absorption in the intestines, and promote excessive fluid secretion, leading to diarrhea.
Yet, harmful bacteria are not the only cause. Unfamiliar water, different cooking methods, and spice-laden foods encountered at travel destinations can disrupt the balance of the gut microbiome, the countless microorganisms living in our intestines. When different microorganisms enter in large quantities, or when existing beneficial bacteria fail to function properly under stress, the intestinal environment falls into disorder. This is precisely why intestinal health is important. Beyond being a simple digestive organ, the intestines are closely connected to the nervous system, endocrine system, and immune system, so much so that they are called the body's second brain.
Jet lag, irregular sleep, and psychological stress regarding unfamiliar environments lurking behind the excitement of travel are factors that cannot be overlooked. The stress hormone cortisol increases the permeability of the intestinal barrier, making it easier for endotoxins to penetrate the bloodstream, and can also affect intestinal motility, causing diarrhea. Thanks to the gut-brain axis, through which our brain and intestines constantly communicate, stress translates directly into the condition of the intestines.
Additionally, gastric acid plays an important role in the initial sterilization of incoming harmful bacteria. When gastric acid secretion decreases due to irregular meals or stress during travel, the likelihood of harmful bacteria reaching the intestines increases. Digestive enzymes also fail to perform their full roles when confronted with unfamiliar food, leaving food insufficiently broken down and irritating the intestines. All these complex factors combine to invite the unwelcome guest known as travelers' diarrhea.
Severe diarrhea easily leads to dehydration and electrolyte imbalance, and in serious cases, it can be accompanied by lethargy and dizziness. Because it can become a situation threatening health beyond mere discomfort, prevention and management are truly important. Intestinal health directly relates to systemic health, far beyond a simple digestion problem. The harmony of the spleen and stomach and the importance of upright qi emphasized by Donguibogam align closely with the gut microbiome balance, immunity, and stress management described in modern medicine.
