Uncovering the Truth behind Popular Opinions
I’ll be the first to throw my hands in the air over what’s allowed to pass as food in the US. Honestly, the ingredient labels on some products are enough to make you scream into your cart. But not everything in the food additives category is evil. Today we’re breaking it down: three misunderstood additives that have a worse reputation than they deserve and three that are worth keeping an eye out for on those ingredient lists.
At the most basic level, food additives are substances added to food and supplements to preserve freshness, improve taste or appearance, or make the product easier to digest. In many ways, additives help us meet our nutrition needs. But like anything else, good intentions can sometimes spiral out of control. Here’s how to make sense of it.
Let’s start with a few additives that have gotten a lot of heat but aren’t necessarily harmful when used appropriately.
Magnesium stearate is that white powdery coating you might notice on your vitamins or supplements. It’s used in processed foods and even in pharmaceuticals and cosmetics. Technically, it’s a saturated fat, which raises red flags for many. But here’s the real deal: magnesium stearate acts as a flow agent, keeping ingredients from clumping together or sticking to machinery. Unlike some saturated fats, it doesn’t appear to coat the GI tract or negatively impact cholesterol in any significant way. And because it’s used in such small amounts, it doesn’t carry the same risks we associate with other fats.
Carrageenan is another one on the hot seat. It’s a soluble fiber derived from seaweed, and it’s used in foods and supplements as a stabilizer or thickener. You’ll find it in things like nut milks, yogurt, and protein powders. The myth is that carrageenan causes inflammation or all kinds of scary side effects. But most of those claims are tied to degraded carrageenan, which is not the kind approved for food use. High-quality food-grade carrageenan isn’t absorbed by the body. It just passes through like other fibers. Food safety agencies around the world have supported its use for years.
Then there’s propylene glycol, the ingredient that makes everyone panic when they hear it’s also in antifreeze. But hear me out. It’s a colorless, odorless liquid used in very small amounts in food, medications, and even sweeteners. The source can be petroleum or vegetables, and it’s approved for consumption in safe quantities, with the acceptable dietary intake is 25 milligrams for every kilogram of body weight. To go over the limit, a 150-pound person would need to consume multiple cups of pure propylene glycol at once. Not exactly a common dietary scenario. So yes, it’s technically an antifreeze ingredient, but it’s also safe in small amounts.
Of course, while some additives are safe or even helpful, there are others we do want to avoid, especially if we’re focusing on nutrient-dense, whole foods.
Let’s talk about Yellow Number Five. This synthetic lemon-yellow dye shows up in everything from cereals and candy to chips, drinks, and even vitamins. It’s been linked to changes in behavior like irritability, hyperactivity, trouble sleeping, and mood swings. While more research is needed, enough concern exists that some countries have banned or limited its use. Reading the label is the best way to avoid it.
High fructose corn syrup is next. This highly processed sweetener is everywhere—sodas, salad dressings, granola bars, you name it. Corn syrup by itself isn’t necessarily harmful in small amounts, but most people eating a Standard American Diet are getting a lot more than just a little. It adds extra sugar without any nutritional value, and it’s associated with increased risk of weight gain and metabolic issues. So yeah, we want to steer clear when possible.
The third on the avoid list is hydrogenated oil. It’s the source of trans fats in packaged foods, and trans fats are known troublemakers for our heart and blood vessels. The tricky part is, food manufacturers can say “zero grams of trans fat” on the label if the product contains 0.5 grams or less per serving. Sneaky, right? That’s why reading the ingredient list is crucial. If you see the words hydrogenated, partially hydrogenated, fractionated, or hydrolyzed next to a type of oil, that’s your cue to put it back on the shelf.
So, what’s the next step? Take a peek in your pantry. Get curious about the ingredients in your favorite packaged items. You’ll probably spot a few of these names right away. But don’t panic. Awareness is power. Just because something’s in there once doesn’t mean you’re doomed. The goal is to keep choosing foods with ingredients you recognize and fewer items that sound like they belong in a chemistry lab.
And of course, the more we eat foods that don’t come with a label at all, the better. Whole fruits, veggies, nuts, seeds, animal proteins, those are always a safe bet. Food additives can be helpful, but they’re not always harmless. Let’s stay informed, stay curious, and keep making choices that support our bodies and our health.