Is MSG Bad For You? Debunking the Myths

May 12, 2026

Is MSG Bad For You? A Science-Backed Deep Dive

You've heard the rumours and want a simple, evidence-backed answer. Decades of research from the world's top health authorities have shaped the global consensus on MSG. But if that's the case, why does it have such a bad reputation? This guide will walk you through what this ingredient actually is, where the common perceptions came from, and what the research shows, so you'll feel confident using it to enhance the flavour of our chilli oils and your own home cooking. Let's look at the facts, because your dinner's counting on it.

Key Takeaways

The Scientific Consensus: Major global health bodies report that MSG is safe for consumption based on the available evidence. Authorities like Australia's FSANZ and the World Health Organisation place it in their highest safety category.
What It Actually Is: It's simply the salt form of glutamate, a natural amino acid that creates the 'umami' or savoury flavour in foods like tomatoes and parmesan cheese.
The Perception's Origin: The health scare started with a non-scientific letter in 1968 that unfairly targeted Asian cuisine. Modern research has not supported this outdated narrative.

What's Monosodium Glutamate, Really?

MSG is just the sodium salt of glutamic acid, a natural amino acid that your own body produces. The satisfying, savoury depth you get from a ripe tomato or aged parmesan cheese? That’s glutamate at work.

Fearing the glutamate in an MSG seasoning is like fearing the H₂O in your tap water but being fine with it in your coffee. It's the exact same molecule. The compound in a shaker of MSG is chemically identical to the glutamate found in a tomato. Your body cannot tell the difference.

It's not a strange chemical: it’s the purest form of the fifth taste, umami. To learn more about this, you can read our guide on the science of umami taste. Here is a breakdown of how much of this natural flavour is already in common ingredients:

Food Source	Natural Free Glutamate (per 100g)
Parmesan Cheese	Up to 1,680mg
Soy Sauce	Up to 1,264mg
Dried Shiitake Mushrooms	Up to 1,060mg
Ripe Tomatoes	Up to 246mg
Source: Umami Information Centre, 2024, and Walker & Lupien, 2000

The Official Verdict on Food Safety

This flavour enhancer has been relentlessly studied by major food authorities on earth. In Australia, it's regulated by Food Standards Australia New Zealand (FSANZ). When you see 'Flavour Enhancer (621)' on an ingredient list, that's the official government code for MSG.

The global consensus is consistent. The World Health Organisation's Expert Committee on Food Additives (JECFA) gives it its highest safety rating, "Acceptable Daily Intake (ADI) not specified." Major bodies like the Food and Drug Administration (FDA) in the United States have also confirmed that added MSG is safe. The scientific consensus is that MSG is not considered harmful in typical amounts.

This is the highest safety rating an ingredient can receive. It means that based on available evidence, authorities do not specify a daily limit for its consumption, a classification also applied to many common food ingredients. Research has led to this rating being applied across all life-cycle stages.

Now that you have the facts, the best way to understand umami is to taste it. Discover the flavour in our full range of vegan-friendly chilli oils.

The Origin of the Myth, Why Some People Think It's Unhealthy

So, if the evidence points to its safety, why the bad reputation? The entire panic wasn't based on proper studies. It was built on a single, anecdotal letter from 1968.

A letter in the New England Journal of Medicine coined the term "Chinese Restaurant Syndrome." As the Science History Institute documents, this was just one person's opinion, not a peer-reviewed study. It unleashed a wave of fear that unfairly targeted Asian cuisine and labelled some of its ingredients as unhealthy.

The entire health scare wasn’t based on a lab coat. It was based on cultural bias. Every credible study since has failed to prove a connection between this ingredient and the reported symptoms, but the perception that MSG is bad has been hard to shake.

Your Questions Answered on Added MSG

Is flavour enhancer 621 the same as MSG?

Yes, 'flavour enhancer 621' is the official food additive code for Monosodium Glutamate in Australia. This code is regulated by Food Standards Australia New Zealand (FSANZ) and aligns with the International Numbering System for food additives. If you see '621' on an ingredient list, it confirms the presence of MSG.

What if I'm sure MSG bothers me?

While the symptoms people experience are real, extensive research suggests it's highly unlikely that MSG is the cause of any negative effects. The gold standard for sensitivity research, the Double-Blind Placebo-Controlled Trial, has repeatedly failed to show a consistent link between its consumption and reported symptoms. Here’s a breakdown of the evidence:

The Nocebo Effect: This is a medically recognised phenomenon where the expectation of a negative outcome can cause a person to experience real physical symptoms. If you believe an ingredient will cause a headache, your brain can create that sensation even if the true trigger is something else in the meal, such as histamines or tyramine.
DBPCT Findings: In these trials, neither the participants nor the researchers know who receives MSG and who receives a placebo. The results consistently show that when people are unaware they are consuming MSG, they do not report symptoms any more frequently than the placebo group. Research shows MSG likely won't have the effect people expect. It's important to consult with a healthcare professional for any health concerns.

How does it compare to salt for cooking?

MSG and table salt (sodium chloride) are two distinct compounds used for different flavour purposes. While both are common food additives, they are not interchangeable. Here is a direct, factual comparison of their properties:

Attribute	Table Salt (Sodium Chloride)	Monosodium Glutamate
Primary Taste	Adds a specific "salty" flavour.	Adds a "savoury" or "umami" flavour. It does not have a strong taste on its own.
Function in a Meal	Seasons by adding saltiness.	Enhances and deepens the existing flavours, making meat taste meatier and sauces richer.
Sodium Content	High (approx. 39% sodium by weight).	Low (approx. 12% sodium by weight). This property is why it can be used in food formulation to reduce overall sodium.
Best Use Case	For general seasoning when a distinct salty taste is desired, such as on chips or in brines.	For complex dishes such as soups, stews, sauces, and marinades, where the goal is to boost overall savoury depth.

Is it vegan?

Yes, modern Monosodium Glutamate is 100% vegan. It's produced by fermenting plant-based ingredients and contains no animal products. The production process is similar to that of other fermented items, such as yoghurt or beer. Common plant sources used for this fermentation include sugar beets, sugar cane, or corn. This is a key reason our chilli oils, found within our full range of products, are proudly vegan.

Why Professional Food Creators Consume & Use It

For professional food creators, the primary focus is always on what delivers the best, most consistent flavour. When developing a new product, for instance, a chef or brand will run countless test batches to get the taste just right. In these scenarios, a professional will often find that pure MSG provides a clean, deep umami flavour that other ingredients simply can’t replicate.

The decision to use it isn't random. It's a choice based on rigorous, hands-on testing to achieve the best possible result. The simple advice is to stop worrying about outdated perceptions and focus on making the dishes you eat taste incredible. Go on, and start turning up the flavour in your kitchen.

Experience the Umami Difference for Yourself

Now that you have the facts, the best way to understand umami is to taste it for yourself. Taste the flavour of our Original Chilli Oil and the rest of our product collection.

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