Food Poisoning: How to Understand Food Labelling Codes—and Protect Yourself

Food poisoning is one of those risks that feels distant—until it isn’t. In Australia, thousands of cases occur every year, many of them preventable. One of the most overlooked defences is something every shopper sees but not everyone fully understands: food labelling.

“Use by”, “best before”, ingredient panels, sodium levels, preservatives—these aren’t just regulatory formalities. They are signals. And learning to interpret them properly can make the difference between a safe meal and a miserable, sometimes dangerous, illness.

This is not about becoming paranoid. It’s about becoming informed.

Use-by dates don’t mean “eat and you’re safe until midnight”

A common misunderstanding is that a “use by” date is a guarantee. It isn’t.

A “use by” date is the last day a manufacturer considers the product safe to consume when stored correctly. It is not a promise that the food will suddenly become unsafe the next day—or that it’s perfectly safe right up to that moment.

Several factors can affect food before that date:

• Temperature fluctuations during transport or storage

• Improper refrigeration at home

• Packaging damage or contamination

If meat has been sitting in a fridge that’s not cold enough, or dairy has been left out briefly and returned, the clock may already be ticking faster than the label suggests.

Think of “use by” as a limit under ideal conditions—not a guarantee under real-world conditions.

“Best before” is about quality, not safety—but still matters

“Best before” dates are different. They refer to quality—taste, texture, and freshness—not necessarily safety.

However, that doesn’t mean you can ignore them entirely. As food degrades:

• Nutritional value can decline

• Taste and smell can change

• Risk of spoilage organisms can increase

Dry goods may last well beyond “best before”, but fresh or semi-perishable foods should still be approached with caution.

Read beyond the date: sugar, sodium and preservatives matter

Food labels are also your window into what you’re actually consuming.

High levels of sugar and sodium don’t directly cause food poisoning, but they do:

• Mask poor quality ingredients

• Extend shelf life artificially

• Contribute to broader health risks

Preservatives, particularly in processed meats and packaged foods, are designed to slow bacterial growth—but they are not foolproof. They reduce risk; they don’t eliminate it.

Watch for:

• Excessive sodium (often used to inhibit bacteria but can hide marginal freshness)

• Added sugars in sauces and ready meals

• Preservatives like nitrates and sulphites, which may affect sensitive individuals

A heavily processed product with a long shelf life is not necessarily a safer product—just a more chemically stable one.

Trust your senses: meat and fruit tell you more than labels

Even with perfect labelling, your senses remain one of the most reliable tools.

For meat:

• A sour or ammonia-like smell is a red flag

• Slimy or sticky texture indicates bacterial activity

• Discolouration—especially grey or green tones—suggests spoilage

For fruit and vegetables:

• Soft spots, mould, or unusual odours signal decay

• Excessive moisture inside packaging can indicate breakdown

• Fermented or “fizzy” smells are a warning

If something looks or smells wrong, don’t rationalise it because the date says it should be fine.

Retailers do their best—but you are the final checkpoint

Supermarkets and grocers invest heavily in stock rotation, refrigeration, and quality control. Most take food safety seriously because the reputational and legal consequences are significant.

However:

• Mistakes happen

• Supply chains are complex

• Products can be mishandled before reaching shelves

Retailers remove questionable products when identified, but they rely on systems—and systems are not infallible.

You are the final checkpoint before consumption. A quick inspection before purchase, and again before cooking, is not overkill—it’s prudent.

Is “Bali Belly” just food poisoning?

The term “Bali Belly” is commonly used by Australians travelling in Southeast Asia. In most cases, it is indeed a form of foodborne illness, often caused by bacteria such as E. coli, Salmonella, or Shigella.

However, it can also involve:

• Contaminated water

• Poor hygiene in food preparation

• Viruses or parasites not typically encountered at home

Symptoms can be more severe than standard food poisoning and may include:

• Persistent diarrhoea

• Fever

• Dehydration

The lesson translates back home: hygiene, storage, and food handling standards matter enormously.

When to go to hospital

Most cases of food poisoning resolve within a few days. But some situations require urgent medical attention.

Seek hospital care if you experience:

• Severe dehydration (dry mouth, little or no urination, dizziness)

• High fever (above 38.5°C)

• Blood in vomit or stool

• Persistent vomiting preventing fluid intake

• Symptoms lasting more than 3 days

• Food poisoning in vulnerable individuals (young children, elderly, pregnant women, immunocompromised people)

Food poisoning is usually an inconvenience—but it can escalate quickly.

Report suspected food poisoning—don’t just move on

If you believe a product has caused illness:

• Report it to the retailer immediately

• Keep the packaging and receipt if possible

• Contact your local health authority

This is not about blame—it’s about prevention. Reports trigger investigations that can:

• Remove contaminated batches

• Identify systemic issues

• Prevent wider outbreaks

Silence allows problems to persist.

The community as the food sentinel

Food safety doesn’t rest solely with regulators or retailers. It’s a shared responsibility.

When consumers:

• Check labels properly

• Inspect products carefully

• Report concerns promptly

They become part of a broader safety network.

In that sense, every shopper is a “food sentinel”—a final line of defence that helps protect not just themselves, but the wider community.

Final word

Understanding food labelling is not about decoding fine print—it’s about making practical, informed decisions.

Dates matter. Ingredients matter. But your judgement matters most.

Because when it comes to food poisoning, prevention doesn’t happen in a laboratory or a boardroom. It happens in your kitchen, at your table, and in the small decisions you make every day.

Current Coles and Woolworths recall notices