Walk down any supermarket aisle and you’ll see an endless parade of brightly packaged foods promising flavour, shelf life, and convenience. But read the ingredient list and you’ll find a chemistry lab of additives—preservatives, colourings, flavour enhancers, emulsifiers. These aren’t just flavour tweaks or aesthetic upgrades. Many food additives have real health implications, especially when consumed regularly over time. Let’s be clear: not all food additives are harmful. Some, like ascorbic acid (vitamin C) or citric acid, are safe and even beneficial. Others serve a clear purpose—preserving food from bacterial growth, improving texture, or preventing spoilage. But the problem begins with overuse, poor regulation, and a food system built around processed products instead of real nutrition.
Take sodium nitrite, found in processed meats like bacon, hot dogs, and deli slices. It preserves colour and flavour—but when exposed to high heat (like frying), it can form nitrosamines, compounds linked to cancer. The World Health Organization has classified processed meats as carcinogenic, partly due to these additives. Then there’s monosodium glutamate (MSG), used to enhance flavour in soups, snacks, and frozen meals. While research hasn’t proven MSG is universally harmful, some people report symptoms like headaches, nausea, or rapid heartbeat after consuming it—a reaction often called “MSG symptom complex.”
Artificial colours, like Red 40 and Yellow 5, are another concern. These are banned or restricted in some countries, but still widely used in the U.S. Some studies have linked them to hyperactivity in children, prompting warning labels in Europe. While the evidence is mixed, the fact that they’re synthetic petroleum derivatives is reason enough to question their long-term safety. What about emulsifiers like carboxymethylcellulose and polysorbate 80, used to keep sauces smooth and ice cream creamy? Emerging research suggests they may disrupt gut bacteria and promote inflammation—a precursor to obesity, metabolic disorders, and even colon cancer.
Part of the problem lies in cumulative exposure. One snack here, one soda there—it doesn’t seem like much. But these chemicals can build up in our systems, especially when our diets rely heavily on ultra-processed foods. The average American gets more than half their daily calories from such products. That’s a lot of additives. Labelling laws don’t always help. Food companies are only required to list ingredients by weight, and “natural flavours” can mean almost anything. Even products marketed as “healthy” often contain synthetic additives to enhance taste or appearance.
So, what’s the solution? It’s not panic, but awareness. Read labels. Cook more from scratch. Eat foods that rot—because that means they’re real. Push for better transparency and stronger regulations. Additives aren’t going away, but we can choose how much we let them into our bodies. Convenience shouldn’t come at the cost of long-term health. And the more we demand better from our food system, the more likely we are to get it.
Published in the Peebleshire News on 4th July 2025