Bali Belly Explained: Myths, Facts & Why It's Not Just a Bali Problem

June 29, 2026

If you've travelled to Bali—or know someone who has—you've almost certainly heard the term Bali Belly.

For many travellers, it's become part of the conversation.

"Don't drink the water."

"Avoid the ice."

"Take probiotics."

"Everyone gets Bali Belly."

But how much of that is actually true?

With so much travel advice shared online—particularly on Facebook—it can be difficult to separate evidence-based health advice from personal opinion.

Let's separate fact from fiction.

Bali Belly in 30 Seconds

Bali Belly is the common nickname for travellers' diarrhoea in Bali.
It isn't unique to Bali.
Travellers' diarrhoea is a recognised medical condition.
It's usually caused by contaminated food, water or surfaces.
It can affect even experienced travellers.
Good preparation can significantly reduce your risk.

Is Bali Belly a Real Medical Condition?

Not exactly.

"Bali Belly" isn't a recognised medical diagnosis. It's simply the nickname commonly used to describe travellers' diarrhoea that develops while visiting Bali.

Travellers' diarrhoea, however, is a recognised medical condition and the most extensively researched travel-related illnesses in the world. It's very real—and certainly not something that's "made up", despite what you may occasionally read online.

It can occur in Bali, Thailand, Vietnam, India, Mexico, Egypt, throughout South America, the Middle East, Peru, across Africa and in many other destinations.

So while the nickname changes depending on where you travel, the underlying illness is generally the same.

Why Does Bali Get Most of the Attention?

Because millions of Australians visit Bali every year.

It's close.

It's affordable.

It's warm.

And many people experience their first episode of travellers' diarrhoea there.

The destination has simply become strongly associated with the illness.

In reality, travellers' diarrhoea can occur almost anywhere in the world.

Myth: Everyone Gets Bali Belly

False.

Many people visit Bali every year without becoming unwell.

Others may become sick on their very first trip.

There's no guarantee either way.

Your risk depends on many factors, including:

Food choices
Water quality
Hand hygiene
Individual immunity
Gut microbiome health
Pure luck (or misfortune!)

Myth: It's Only the Water

False.

Unsafe drinking water is only one possible source.

Travellers' diarrhoea may also spread through:

Food
Ice made with contaminated water
Raw salads washed in contaminated water
Seafood
Contaminated hands
Money
Menus
Door handles
Shared public surfaces

This is why good hand hygiene is so important. If you're a nail biter, take extra care to keep your hands away from your mouth, particularly after touching public surfaces.

Myth: It's Not Contagious

False.

Depending on the cause, travellers' diarrhoea can spread from one person to another.

If you're travelling with family or a group and one person becomes unwell, others may also become sick through contaminated hands, shared bathrooms, food, drinks or close contact—particularly if the illness is caused by certain viruses or bacteria.

Good hand hygiene, careful food handling and avoiding sharing food or drinks with someone who's unwell can help reduce the risk.

Myth: Street Food Is Always Unsafe

False.

Some of the safest food you'll eat overseas may come from busy street vendors cooking meals fresh in front of you.

Meanwhile, buffet food that's been sitting at room temperature for hours can pose a greater risk.

Look for food that's:

Freshly cooked
Served hot
Prepared in front of you
Popular with locals

Myth: Ice Is Always Dangerous

Not necessarily.

Commercially manufactured ice is now widely regulated in Bali and many other popular destinations.

A common sign is the familiar tubular ice cube with a hole through the middle.

If you're unsure where the ice has come from, however, it's perfectly reasonable to skip it.

What About Facebook Advice from Random Strangers?

If you've ever joined a Bali travel Facebook group, you've probably seen it.

Someone asks:

"What can I do to avoid Bali Belly?"

Within minutes, dozens—sometimes hundreds—of replies appear.

Some are genuinely helpful.

Some are based on personal experience.

And some... well... should probably stay on Facebook.

You might read things like:

"Drink Coca-Cola every morning on an empty stomach."

"Just drink raspberry cordial and you'll be fine."

"I've been to Bali 20 times and never had Bali Belly. It's all rubbish."

The problem?

Personal experience isn't the same as scientific evidence.

One traveller may visit Bali twenty times without becoming unwell.

Another may develop travellers' diarrhoea on their very first trip despite being extremely careful.

Everyone's gut microbiome, immune system, travel habits and exposures are different.

Facebook groups can be fantastic for restaurant recommendations and finding the best beach club.

For medical advice, they're probably not your first stop.

Why Do Some People Never Get Sick?

This is one of the most common travel questions.

The answer isn't simple.

Some people may have developed greater exposure to certain microbes through previous travel.

Others may simply be fortunate.

There's also growing interest in the role of the gut microbiome and how preparing your gut before travel may help support your natural resilience.

Should You Cancel Your Trip?

Absolutely not.

Millions of people enjoy incredible holidays every year without becoming unwell.

The goal isn't to be fearful.

The goal is to be prepared.

Making smart food and water choices, practising good hand hygiene and looking after your gut before you travel can significantly reduce your risk.

Bali Belly Doesn't Define Bali

Bali remains one of the world's most popular holiday destinations for good reason.

Beautiful beaches.

Friendly people.

Amazing food.

Rich culture.

Like any overseas destination, travelling comes with certain health risks—but those risks can often be managed with sensible preparation.

Enjoy Bali.

Just don't let Bali Belly become your strongest holiday memory.

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