Food additives to avoid: a guide to reading food labels

Food additives are substances added to food to preserve freshness, improve texture, boost flavor, or change color. Most are permitted for use in the United States, so a list of food additives to avoid is usually a personal list rather than a safety list.

Some shoppers limit added sugars, certain artificial colors, or specific preservatives for dietary or personal reasons. The ingredient list is where those decisions get made, because the front of the package is built to sell the product.

Why Food Labels Can Be Confusing

Front-of-package wording is marketing first. Four claims cause the most trouble.

"Sugar-free" is an FDA-regulated term that means less than 0.5 grams of sugar per serving. It says nothing about calories or overall quality, and plenty of nutritious foods such as fruit and plain Greek yogurt contain far more than that from their own sugars.

The American Heart Association recommends keeping added sugars under 6 teaspoons a day for women and 9 teaspoons for men, which makes the added sugars line on the Nutrition Facts panel more useful than the claim on the front.

"Multigrain" only means the product contains more than one grain, and those grains are often refined.

"Enriched wheat flour" is refined flour with nutrients added back, so it is not whole wheat. Look for "100% whole wheat" or "100% whole grain" instead.

"Low fat" is another regulated claim, and low-fat products sometimes carry more sugar or sodium to make up for flavor.

How to Read an Ingredient List for Additives

Ingredients appear in order by weight, so whatever sits in the first few spots makes up most of the product. Read the entire list rather than stopping at the first three.

While scanning, look for added sugars under their many names, such as corn syrup, cane juice, dextrose, maltose, and fruit juice concentrate. Note artificial colors, preservatives, and flavor enhancers. Pay attention to how many highly processed ingredients show up together, which usually says more than any single item does.

Two cautions matter more than the list itself. A long ingredient list does not automatically mean a product is unhealthy, and a chemical-sounding name does not automatically mean an ingredient is dangerous. Ascorbic acid is vitamin C.

Food Additives to Avoid or Consider Limiting

Artificial Food Coloring

Dyes are added for appearance alone. The names to recognize are FD&C Red No. 40, Yellow No. 5, Yellow No. 6, Blue No. 1, and Red No. 3.

Regulations here are actively changing, and the FDA revoked authorization for Red No. 3 in food in January 2025 with a phase-out period for manufacturers.

Some parents limit dyes because of reported effects on children's behavior. California published a state review of that evidence in 2021, and the question remains debated rather than settled.

Sodium Nitrite and Nitrates

These preserve processed meats and keep their pink color. They appear in bacon, hot dogs, sausage, and deli meat.

Many people who want to limit them cut back on processed meat overall rather than tracking the additive by itself, since the category and the additive travel together.

High-Fructose Corn Syrup and Added Sugars

High-fructose corn syrup is a common sweetener in sodas, sauces, and baked goods. Most nutrition guidance focuses on total added sugar intake rather than singling out one sweetener, so the added sugars figure on the label is the number that matters.

Artificial Sweeteners

Sucralose, aspartame, saccharin, and acesulfame potassium replace sugar in diet drinks, yogurts, and protein products. All four are approved for use in the United States, though some shoppers choose to limit them based on taste, digestive comfort, or personal preference.

Sodium Benzoate

This preservative shows up in acidic products such as soda, salad dressing, and pickles. It appears on labels by name, sometimes alongside potassium sorbate. It is permitted at limited levels, and the common reason people limit it is that in acidic drinks it can react with added vitamin C to form benzene in small amounts, which manufacturers reformulated to address.

MSG and Flavor Enhancers

Monosodium glutamate adds savory flavor and is listed by name when used. Related ingredients include yeast extract, hydrolyzed vegetable protein, and disodium inosinate.

The FDA classifies MSG as generally recognized as safe. Some people report short-term symptoms after eating large amounts, which is different from the ingredient being harmful to everyone.

A product can carry a "no MSG added" claim and still contain glutamate from ingredients such as yeast extract or hydrolyzed protein, since only monosodium glutamate itself has to be declared by that name.

What About Guar Gum, Xanthan Gum, and Carrageenan?

Guar gum and xanthan gum are thickeners and stabilizers that keep products smooth and stop them from separating.

They are common in sauces, dressings, gluten-free baked goods, dairy alternatives, and ice cream. Both come from plant or fermentation sources, and an unfamiliar name does not make either one a harmful food additive.

Carrageenan, which comes from red seaweed, does similar work in plant milks and deli meats. It is permitted in the United States, and the Joint FAO/WHO Expert Committee on Food Additives has reviewed it more than once without concluding that it poses a safety concern at typical intakes. Some researchers continue to raise questions about digestive effects, and the evidence in people is limited. Learning what an additive actually does is a better starting point than avoiding it on sight.

Other Ingredients Worth a Closer Look

Partially hydrogenated oils were the main source of artificial trans fat. The FDA removed them from the generally recognized as safe category in 2015, and they have largely left the food supply.

BHA and BHT are antioxidant preservatives used in cereals, chips, and fats. BHA is listed under California's Proposition 65, which triggers a warning requirement in that state rather than a federal restriction. Potassium bromate is a dough conditioner that is banned in several countries and will be prohibited in California beginning in 2027. Brominated vegetable oil was once used in citrus sodas, and the FDA revoked its authorization in 2024.

"Artificial flavoring" is a catch-all term that does not identify the underlying compounds, which is why some shoppers prefer products that name their flavor sources.

A Simple Checklist for Spotting Ingredients to Avoid in Food

Three questions handle most shopping decisions.

1. What additives are actually in this product?

Read the full ingredient list rather than the claims on the front.

1. Which of these do I personally want to limit?

For many people that means added sugars, specific artificial colors, certain preservatives, particular sweeteners, or partially hydrogenated oils.

1. How many highly processed ingredients are stacked together here?

One stabilizer in an otherwise simple product is different from a list of fifteen.

Doing that for every item takes time, which is where Foodsage helps. You set the ingredients and ingredient families you want to avoid, then scan the barcode or photograph the label.

The app reads the full panel, explains each ingredient in plain language, grades the product against your own profile instead of a generic score, and can suggest cleaner alternatives. That makes it faster to check a panel against the additives you have already decided to limit.

Foodsage is an informational ingredient checker. It is not a medical device, and it does not diagnose or treat any condition. The printed label stays the final word, and questions about a specific diet belong with a doctor or a registered dietitian.

Making Better Swaps

Comparing two similar products usually beats trying to eliminate every additive. Check the store-brand version against the name brand, or two granola bars side by side, and pick the one whose ingredient list fits your preferences better.

Cooking at home gives the most control, though few people manage that for every meal. The goal is an informed choice rather than a running list of things to fear.

Deciding What Goes in Your Cart

The ingredient list tells the real story, and the front of the package rarely does. Not every unfamiliar name is a problem, so the practical approach is deciding which additives you want to limit and checking for those.

Scanning products with Foodsage makes that check quick enough to do on a full cart. Set your limit list once, and every scan checks against it rather than against a generic score. More ingredient guides are on the MetricPoint blog.