Why do I get constipated when I travel?

Your gut is a creature of schedule, and travel dismantles the schedule piece by piece. Look at the NHS's own list of common constipation causes: not enough fibre, not enough fluids, sitting or lying for long periods, ignoring the urge to go, changing your diet or daily routine, and stress. A single trip can tick every box. You sit for hours in a car or plane seat instead of walking around. You drink less (deliberately, to avoid the toilet queue) and the plane cabin air dehydrates you further. Breakfast becomes a pastry at a gate instead of your usual bowl. Your body offers the urge at 10am like clockwork, and you are on a motorway - so you ignore it, and the bowel, being trainable in the worst way, learns to stop offering. Add unfamiliar bathrooms, a time-zone shift, and a little travel tension, and the system stalls. MedlinePlus's prevention advice maps neatly onto the fixes: fibre, water, exercise, and taking time to go when you need to. So the counter-measures: hydrate deliberately on travel days (carry the bottle), keep some fibre anchors in your meals, walk whenever the itinerary allows, and - the big one - give yourself an unhurried morning toilet window in the new place rather than rushing out. Most travel constipation resolves within days of arriving or returning home. See a pharmacist for a gentle laxative if it is making you miserable, and see a GP if it persists past the trip, alternates with diarrhoea, or comes with blood, weight loss, or severe pain. Pymander is a free AI doctor, 24/7 by text, that can help you plan around it.