Preparing for international travel often involves packing essentials like sun cream, plug adaptors, and painkillers, yet a crucial element for a comfortable trip—gut health—is frequently overlooked. Stomach issues can significantly disrupt a vacation, with traveler's diarrhea affecting a substantial percentage of visitors to certain regions.
According to Dr. Emily Leeming, a diverse gut microbiome is key to preventing traveler's tummy. A varied community of microbes helps to outcompete invading pathogens by consuming the nutrients they need to establish themselves. Research indicates that dietary changes can lead to noticeable shifts in gut microbes within three to four days.
To foster a healthier gut microbiome, experts recommend increasing fiber intake by filling half of one's plate with vegetables at meals and consuming a daily handful of nuts and seeds. Including fermented foods like kefir or kimchi, and considering a probiotic supplement, particularly one containing Saccharomyces Boulardii, may reduce the risk of traveler's diarrhea by approximately 15 percent, according to a 2018 review.
Infection can damage the gut lining and disrupt the microbial community, potentially leading to irritable bowel syndrome in about 17 percent of affected individuals, as reported in JAMA in 2015. These changes can sometimes persist, causing low-level inflammation and heightened sensitivity.
Preventative measures include consistent hand washing before eating and adhering to the 'boil it, cook it, peel it' rule, especially for raw foods, unpeeled fruits, ice, and fresh juices that might be prepared with local tap water. Caution is advised with buffets, street stalls, and foods left out in the heat. Packing oral rehydration sachets is also recommended to replace lost electrolytes.
For those experiencing symptoms, most stomach bugs resolve within a few days. However, medical attention should be sought if a fever, blood in the stool, or symptoms lasting more than a week occur. Some individuals may find certain foods, such as dairy, harder to digest post-infection due to temporary lactose intolerance, which usually resolves within weeks.
Addressing Travel-Related Constipation
While stomach upset is a common travel concern, constipation and feelings of bloating and sluggishness are also prevalent. These can be exacerbated by changes in cabin pressure and disruptions to the body's natural eating rhythms, as the gut's production of stomach acid and digestive enzymes aligns with internal body clocks rather than actual meal times.
To mitigate these issues, travelers can switch their watch to the destination's time zone upon starting their journey and eat only during local mealtimes to help synchronize the gut with the new schedule. Additionally, maintaining adequate fiber intake can be challenging while traveling; meals like grilled fish and salad may not provide sufficient fiber.
Consuming two kiwis daily has been suggested as a dietary fix, owing to their fiber content and the enzyme actinidin, which aids digestion. Alternatively, psyllium powder, derived from the seeds of the Plantago ovata plant, can also be effective. It is available over-the-counter and works similarly to kiwi but requires ample fluid intake to function properly. It is advisable for those with chronic travel constipation to begin taking psyllium a week before their trip. However, individuals with bowel narrowing or obstruction should consult a healthcare professional before use, as it could potentially worsen their condition.
