Let’s be real, walking down the grocery store aisle these days feels a bit like navigating a chemistry lab. Those ingredient lists on the back of packages? They can be totally overwhelming. Still, health experts have been raising serious concerns about certain additives that keep showing up in everything from your morning cereal to that soda you grabbed at lunch. The thing is, some of these ingredients are actually linked to real health risks, not just internet fearmongering.
Here’s the thing: nearly all food chemicals introduced since 2000 were greenlighted for use by food and chemical companies rather than properly reviewed by the Food and Drug Administration. That means manufacturers are essentially policing themselves. While these additives might make your food last longer on the shelf or look more appealing, they could also be doing things to your body you’d rather avoid. So let’s dive into four specific ingredients that nutrition experts and researchers say you should think twice about.
Red Dye No. 3: The Colorful Culprit
Red Dye 3, also known as erythrosine, was recently banned by the FDA, but manufacturers who use this additive have until January of 2027 to remove it from their products. So yeah, it’s still lurking in your food right now. You’ll find this bright synthetic colorant in candies, baked goods, and sweetened beverages, basically anything that needs to look cherry red or hot pink.
Red Dye No. 3 has been found to cause cancer and thyroid tumors in lab animals and has been linked to hyperactivity and other neurobehavioral effects in children. The crazy part? It was banned from cosmetic products way back in 1990 after animal studies showed that high doses could cause cancer in lab rats. Yet somehow it stayed legal in food for over three decades after that. The European Union banned it more than thirty years ago, but we’re only just catching up now.
Research in rodents suggests that high doses of red dye 3 can disrupt thyroid hormone production and has also been linked to thyroid cancer in animal studies. Honestly, when you think about how many kids consume products with this dye, it’s pretty concerning. Check your ingredient labels carefully, especially on brightly colored treats.
Artificial Sweeteners: Not As Sweet As They Seem
So you’re trying to cut sugar and reach for that diet soda or sugar-free snack. Makes sense, right? The problem is that artificial sweeteners like aspartame, sucralose, and acesulfame potassium might not be the health heroes we thought they were. There’s really pretty good evidence from long-term epidemiological diet studies that link exposure to non-sugar sweeteners to Type II diabetes, to weight gain, to heart disease.
Wait, weight gain? From zero-calorie sweeteners? Seems counterintuitive, but recent studies suggest that artificial sweeteners, both nutritive and nonnutritive, may stimulate appetite, leading to increased caloric intake, a higher body mass index, and a greater risk of obesity. That’s not exactly what you signed up for when choosing diet over regular.
People who use artificial sweeteners such as aspartame, acesulfame potassium, and sucralose may have a higher risk of cardiovascular disease, and these zero-calorie sweeteners might trigger inflammation and alter normal metabolism, the gut microbiome, and blood vessels. Some research even suggests aspartame was linked to a higher risk of stroke, while acesulfame potassium and sucralose were associated with higher coronary artery disease risk. Your gut bacteria may also be taking a hit. Concerns extend to gut health, where artificial sweeteners have been linked to inflammatory bowel diseases, gut microbiota disruption, increased intestinal permeability, and dysbiosis, leading to metabolic disturbances such as impaired glucose tolerance and insulin resistance. The irony? You’re trying to be healthy, but these substitutes might be doing the opposite.
Sodium Benzoate: The Preservative Problem
Sodium benzoate is used as a preservative to prevent food from molding and it’s added to a wide variety of foods, including mayonnaise, margarine, carbonated drinks, jams and jellies, sauces, and tomato paste. It’s basically everywhere. While the FDA considers it generally safe, there are some legitimate concerns you should know about.
The biggest issue? When sodium benzoate is combined with vitamin C and exposed to high temperatures or light, the cancer-causing chemical benzene may form. Sodium benzoate is a preservative used mostly in carbonated drinks, fruit juice, salad dressing and fermented foods, and when combined with ascorbic acid, citric acid and vitamin C, it has been linked to an increased risk of cancer through the formation of benzene. That’s a pretty scary chemical reaction happening in your bottle of soda.
People who drank beverages containing high levels of sodium benzoate reported an increase in attention deficit hyperactivity disorder symptoms, and studies found that preservatives such as sodium benzoate in foods and drinks can lead to inflammation in the body. This food chemical has been linked to a variety of health harms, including damage to DNA, hormone disruption and reduced fertility. It’s hard to say for sure what’s causing those effects, but given how common this preservative is, it might be wise to limit your exposure where you can.
Brominated Vegetable Oil: The Hidden Hazard
This one sounds industrial, and honestly, it kind of is. Brominated vegetable oil, or BVO, is used to stabilize citrus flavors in sodas and fruity drinks, and it can cause neurological and reproductive harm and thyroid toxicity. If you love citrus-flavored drinks, you might want to check those labels.
Peer-reviewed studies conducted on rodents have linked brominated vegetable oil to neurological problems; thyroid, heart and liver problems; and behavioral, developmental, and reproductive issues. The research shows this stuff can actually build up in your body over time. Research in rats shows that BVO is stored in fat, which means it’s not easily flushed from your body and may impact many different systems over the long term, and research has shown a significant impact on thyroid function.
By August 2025, FDA banned additives like BVO and erythrosine will be gone for good. Major soda companies have already phased it out from most of their products, but some store brands and niche sodas may contain BVO, so check labels for ingredients like brominated vegetable oil until phaseout completes. It’s worth taking those extra few seconds to scan the ingredient list before tossing something in your cart.
What Can You Actually Do About This?
I know this all sounds pretty doom and gloom. But here’s the good news: you’ve got more control than you think. First off, start reading ingredient labels. Seriously, just flip that package over and take a look. If you see these four ingredients, consider putting it back on the shelf. I know it sounds tedious, but you’d be surprised how quickly it becomes second nature.
You can reduce your intake of potentially harmful food additives by eating less processed food, and diets high in processed foods are linked to obesity, high blood pressure, heart disease and cancer. Basically, the more whole foods you can incorporate into your diet, the better. Fresh fruits and vegetables don’t come with ingredient lists because they don’t need them.
Enjoy more whole, plant-based foods, like fruits, vegetables, nuts, and grains, as it will reduce the need to scrutinize ingredient labels and up your fiber intake, which is key for healthy gut bacteria. When you do buy packaged foods, choose products that have fewer ingredients and fewer unrecognizable ones. Sometimes the simplest choice really is the best one.
Look, I’m not saying you need to become some kind of food purist who only eats organic kale. Life happens, and convenience matters. But being aware of what you’re putting into your body is never a bad idea. These four ingredients have legitimate research backing up the concerns, and experts are telling us to be cautious for good reason. Did you expect that artificial sweeteners could actually lead to weight gain? What’s your take on these additives?
