How to Not Get Bali Belly (From Someone Who Lives Here)

If you've been putting off Bali because of what your brother-in-law caught in Kuta in 2009, this one is for you.

I'm [[NEEDS INPUT: founder first name]], and I've lived in and out of Indonesia for 15 years. I eat here every day. I take groups of up to 12 guests around the island, most of them Australians who have worried about this exact thing, and I've built the way we eat on tour around one goal: nobody spends a day of their holiday in the bathroom.

Here's what I've learned. It's less mysterious than you think, and most of it is habit.

What Bali Belly actually is

"Bali Belly" is the local nickname for travellers' diarrhoea. Nothing exotic. It's the same thing people pick up in Mexico, Thailand or Egypt, and it has a different nickname in each place.

Most cases are bacterial. The bug usually gets into you through food that has been handled, left sitting, or reheated, rather than through "the water" on its own. Tap water plays a part, but mostly in small ways: a salad rinsed under the tap, ice made from it, a toothbrush held under the bathroom tap.

That distinction matters, because it tells you where to put your attention. People spend the whole trip worrying about the water and then eat from a hotel buffet that has been sitting in 32-degree air since breakfast.

The other thing worth knowing: your gut is used to your own kitchen. New bacteria, new spices, more chilli, a long flight, a few Bintangs and less sleep than usual all add up. Some of what gets called Bali Belly is simply a body adjusting. That's why the first two days matter most, and we'll get to that.

The seven habits that work

None of these are complicated. Together they do most of the work.

1. Eat where it's busy and cooked to order

A warung with a queue of locals at lunchtime is turning its food over fast. Nothing sits. The wok is hot, the oil is hot, and your nasi goreng arrives a few minutes after you ordered it. That's the safest plate on the island.

The quiet restaurant with the laminated photo menu and no customers is the one to walk past. Whatever you order has probably been waiting for you.

2. Skip buffets that have been sitting in the sun

Hotel buffets aren't automatically bad. A breakfast buffet at 7am, freshly laid out, is usually fine. The problem is the lunch buffet at 2:30pm that was set up at noon, outdoors, with the lids left open. Warm food held at the wrong temperature for a couple of hours is exactly how bacteria multiply.

If you do eat from a buffet, take what's hot and steaming or what's freshly cut, and leave the rest.

3. Ice only where you know the source

Good news: in my experience most ice in Bali comes from commercial factories, made from treated water, and is delivered in sealed bags. The hotels, cafés and busy restaurants we use all buy it this way. You can usually spot it. It's the uniform cylinders with a hole through the middle.

Where I'd pass on ice is a street cart or a tiny roadside stall where the ice has been chipped off a block on the ground. It's a small risk, but it's an easy one to avoid.

4. Bottled or filtered water, including for your teeth

Drink bottled or filtered water. Every stay we use provides it, and we keep it in the car all day. The one people forget is the bathroom tap. Brushing your teeth with it is a small exposure, but it's the kind of small exposure that adds up over ten days. Keep a bottle next to the sink and it becomes a habit by day two.

5. Wash your hands before every meal

This is the unglamorous one, and it probably prevents more illness than everything else on this list combined. Money, door handles, temple steps, the rail on the boat: your hands touch a lot before they touch your food. Soap and water when you can, hand sanitiser when you can't. We keep a bottle in every vehicle.

6. Go easy on the first two days

Your gut needs a day or two to meet the local bacteria on friendly terms. That's the time to eat simply. Rice, grilled fish, soup, cooked vegetables, fruit you peel yourself. Hold off on the four-chilli sambal, the raw salad and the third cocktail until day three. Most people who get sick get sick early, and most of those were ambitious on the first night.

7. Let the guides choose

Our guides grew up here. They know which warung has been run by the same family for as long as anyone can remember, and which roadside stall changed hands last month. When someone who lives here says "not that one, this one", that's worth more than any online review.

A quick reference

What we do on tour

I won't tell you nobody on our trips has ever had an upset stomach. That would be a lie, and you'd be right not to trust it. What I can tell you is what we do to make it rare.

The warung rule. We eat at family-run places that are busy at the time we arrive and cook to order. Most of them we've been going to for years and know the owners by name. If a place has changed hands or the kitchen looks different, we go somewhere else that day. No exceptions, no matter how good the view is.

Kitchens briefed in advance. Every restaurant on our itinerary knows we're coming, how many of us there are, and what we need: filtered water on the table, factory ice, salads washed in filtered water, and dietary requirements handled properly. Booking ahead means your meal is cooked when you sit down, not held over from an earlier sitting.

Water in the car, always. Sealed bottles in every vehicle, every day. You never have to think about it.

The first two days are gentle by design. Our itineraries start slowly for a lot of reasons, and this is one of them. On the 10-Day Island Loop, the first full day is an easy one around Ubud with simple, good food, so your body has a chance to settle before we head north.

Kids get the same care. On our family retreats, we brief the Bali Sunny Kids team on the same rules for every snack and lunch, and they carry water and sanitiser for the little ones.

If it happens anyway

Sometimes it just happens, despite everything. Here's how to handle it calmly.

Hydration is the whole game. Most mild cases pass within a day or two. What makes people feel terrible is dehydration, not the bug itself. Drink more than feels necessary: bottled water, plus oral rehydration salts, which every pharmacy (look for "apotek") in Bali sells and which we carry in our kit. Coconut water is a decent backup. Skip alcohol and coffee until you're right.

Eat plain, small and often. Plain rice, bananas, toast, clear broth. Nothing spicy, fried or dairy-heavy for a day.

Rest. Our itineraries have rest built in, and nobody minds if you sit out a morning. The car is air-conditioned, the room is comfortable, and the rest of the group will bring you back a story.

When to see a doctor. Don't wait it out if you have a fever, blood in your stool, symptoms lasting more than a couple of days, trouble keeping fluids down, or signs of dehydration such as dizziness or very dark urine. If you have an existing condition, are diabetic, or take medication that could be affected, see someone sooner rather than later. This is general guidance, not medical advice, and your own doctor knows your situation better than I do.

What the clinics are like. The south of Bali has private clinics and hospitals with English-speaking doctors who see Australians every week. From our northern and eastern bases the drive south is longer, roughly two to three hours, so we also know the nearest reliable local clinic from every base. On tour, you never have to work any of this out yourself. You tell me or your guide, and we handle the phone calls, the transport, the translation and the paperwork. That's part of what the 24/7 support line is for.

Why travel insurance matters. A doctor's visit for a stomach bug in Bali is not usually expensive. A hospital stay can be, and a medical flight home is genuinely expensive. Private clinics generally ask for a payment guarantee up front, and that's where insurance earns its keep. It's compulsory on our trips, and we'll help you choose a policy that covers what you actually need, including any existing conditions. We'd rather you never use it. We'd also rather you have it.

The honest summary

Bali Belly is real, it's mostly avoidable, and the handful of habits above do most of the work. Eat where it's busy, drink what's sealed, wash your hands, go easy for two days, and let people who live here choose where you eat. When you travel with us, most of that is handled before you sit down. There's more in our FAQ, including what we do about dietary requirements, medications and the heat.

You've earned a holiday where the biggest food decision is fish or chicken. Not whether it's safe.

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