Food-Additives
Acesulfame Potassium: The Sweetener That's Almost Never Alone
What is acesulfame potassium in food? Why Ace-K is almost always blended with other sweeteners, its regulatory history, and microbiome research
IntermediateAnnatto: The Natural Orange Color in Cheese and Butter
Annatto colors cheddar cheese, butter, and dairy products orange-yellow using natural carotenoids from Bixa orellana seeds. Learn how it works and the allergy facts.
BeginnerArtificial Flavors: How They're Made and Why 'Artificial' Doesn't Mean Unsafe
Artificial flavors are synthesized in labs, but many are identical molecules to those in natural foods. Learn how they're made, regulated, and why 'artificial' isn't a safety category.
BeginnerArtificial Sweeteners: What the Research Actually Shows
Are artificial sweeteners safe? We cover aspartame, sucralose, saccharin, and stevia, including the 2023 WHO classification and gut microbiome research
IntermediateAspartame: What the Research Actually Shows After 40 Years of Study
Is aspartame safe? 40 years of research, a 2023 IARC classification, and what the ADI actually means for daily diet soda drinkers
IntermediateAzodicarbonamide: The 'Yoga Mat Chemical' in Bread, Explained
Is azodicarbonamide safe in bread? The EU banned it in 1997. Subway removed it in 2014. The US still allows it at 45 ppm. Here's what the science shows
IntermediateBHA and BHT: The Antioxidant Preservatives Under FDA Review
Is BHA safe to eat? BHA is listed as a probable carcinogen by the National Toxicology Program. Here's what the evidence shows and what FDA is doing about it
IntermediateBrominated Vegetable Oil: Why the FDA Finally Revoked Its Approval
What is brominated vegetable oil (BVO)? FDA revoked BVO's authorization in July 2024 after 60+ years. Here's the science behind bromine accumulation and thyroid effects
IntermediateCalcium Propionate: The Bread Preservative That Keeps Mold Away
Calcium propionate keeps commercial bread mold-free for weeks. Learn how it works, why it's in bread, and what the research actually says about safety.
BeginnerCaramel Color: Four Types, One Controversy
Is caramel color safe? The four types explained, why Class IV matters, the 4-MEI controversy, and how Coca-Cola reformulated for California
IntermediateCarboxymethyl Cellulose: The Emulsifier Under the Microbiome Microscope
What is carboxymethyl cellulose in food? The 2015 and 2022 studies on gut microbiome effects, what the human trial found, and current regulatory status
IntermediateCarmine: The Insect-Derived Red Dye in Your Food
What is carmine in food? The insect source, why it's used, allergy risks, labeling rules, and which products commonly contain it
BeginnerCarrageenan: What It Is and Whether You Should Avoid It
Is carrageenan safe? We break down the seaweed-derived thickener, the degraded vs. undegraded controversy, and who might want to avoid it
BeginnerCitric Acid: Natural vs Manufactured. Does the Source Matter?
Is citric acid bad for you? We cover industrial production from Aspergillus mold, the mold allergy concern, and what citric acid actually does in food
BeginnerErythritol: The Sugar Alcohol Behind the 2023 Heart Risk Study
Is erythritol safe? The 2023 Cleveland Clinic study on cardiovascular risk, what it found, what its limits are, and the current regulatory status
IntermediateFood Additives Explained: What Every Label Ingredient Actually Does
The complete food additives list explained: what they do, how regulators approve them, and what the science actually says about safety
BeginnerFood Dyes and Behavior: What the Science Says
Food dyes side effects, the Southampton study, FDA's position on artificial colors and ADHD, and which children might be most sensitive
BeginnerGuar Gum: The Seed Fiber That Thickens Dairy and Gluten-Free Products
What is guar gum in food? How it works as a thickener, how it compares to xanthan gum, and what the Cal-Ban 3000 incident actually showed
BeginnerHFCS: Is It Really Worse Than Sugar?
Is high fructose corn syrup bad? We compare HFCS to sugar, explain fructose metabolism, and give you the honest answer about what the research shows
BeginnerHow FDA Reviews Food Chemicals: GRAS, Petitions, and What Changes in 2026
A practical guide to how food chemicals are reviewed in the US, including GRAS, food additive petitions, and the FDA post-market chemical review program.
BeginnerLocust Bean Gum: The Seed Gum Stabilizing Your Ice Cream
Locust bean gum comes from carob seeds and prevents ice crystal growth in ice cream. Learn how it works, where it's found, and why its safety record is clean.
IntermediateMaltodextrin: The Refined Starch With a Surprisingly High Glycemic Index
What is maltodextrin in food? Its glycemic index of 85-105, why it's in protein powders and 'healthy' snacks, and gut microbiome concerns
IntermediateModified Food Starch: What Processing Does to Starch and Why
What is modified food starch in food? The four modification types explained, why native starch isn't good enough for processed foods, and allergen concerns
BeginnerMonk Fruit Sweetener: What Mogrosides Are and How They Work
What is monk fruit sweetener? How mogrosides work, why it doesn't raise blood sugar, and what the limited research actually shows
BeginnerMono- and Diglycerides: The Fat-Like Emulsifiers in Almost Every Processed Food
What are mono and diglycerides in food? How they work as emulsifiers, the trans fat loophole, and what vegans should know about animal-derived sources
BeginnerMSG: The Science Behind the Most Misunderstood Seasoning
MSG is safe for the vast majority of people. Here's what the research actually shows and why the MSG scare was never grounded in science.
BeginnerNatamycin: The Natural Antifungal That Protects Cheese and Yogurt
Natamycin is a natural antifungal from soil bacteria used on cheese rinds and in yogurt. Learn how it works and why its safety record is unusually strong.
IntermediateNatural Flavors: What the FDA Definition Actually Means
What are natural flavors in food? The FDA definition, why 'natural strawberry flavor' may contain no strawberries, and what the trade secret issue means
BeginnerNatural Food Colors in 2025: What Is Changing and What It Means on Labels
FDA and HHS announced new actions on petroleum-based synthetic dyes in 2025. Here is what consumers should expect in real products.
BeginnerNatural vs Artificial Flavors: What's the Real Difference?
Natural vs artificial flavors: the FDA regulatory definition, what 'natural' actually means chemically, and whether artificial flavors are less safe
BeginnerPectin in Packaged Foods: How This Natural Fiber Acts as an Additive
Pectin is a natural fruit fiber used as a gelling agent, thickener, and stabilizer in jams, yogurt, and fruit fillings. Learn how it works and why it's safe.
BeginnerPhosphates in Food: Function, Sources, and Kidney Health Concerns
Are phosphates in food bad for you? How phosphate additives work, bioavailability differences from food sources, and the kidney disease concern explained
IntermediatePolysorbate 80: The Emulsifier in Your Ice Cream and the Research on Your Gut
Is polysorbate 80 safe? The 2015 mouse gut study explained, what the doses mean, and where current regulatory consensus stands
IntermediatePotassium Bromate: The Bread Additive Banned Almost Everywhere But the US
Is potassium bromate safe? The EU banned it in 1990. IARC classifies it as possibly carcinogenic. The US still allows it. Here's what the evidence shows
IntermediatePotassium Sorbate: The Mold Inhibitor in Your Cheese and Salad Dressing
Potassium sorbate inhibits mold and yeast in cheese, dressings, and wine. Learn how it works, where it's found, and what the safety research shows.
BeginnerPropylene Glycol in Food: Why It's Not the Same as Automotive Antifreeze
Is propylene glycol safe in food? The GRAS status, how your body metabolizes it, and why the antifreeze comparison is misleading but not entirely wrong
BeginnerPropylparaben: The Bread Preservative Getting Phased Out
What is propylparaben in food? This mold inhibitor is in flour tortillas and baked goods. California bans it in 2027. Here's what the endocrine disruption research shows
IntermediateRed 40 (Allura Red): What the Science Actually Shows
Is Red 40 bad for you? The ADHD link, the FDA ban confusion, and what the actual evidence shows about Allura Red AC in food and drinks
IntermediateSilicon Dioxide in Food: Anti-Caking Science and the 'Sand in Food' Myth
Silicon dioxide is an anti-caking agent in spices and powdered foods. It's not the same as sand. Learn how it works, why it's safe, and what nano-size concerns mean.
BeginnerSodium Benzoate: Preservative Safety Explained
Sodium benzoate side effects, the benzene concern, and the ADHD controversy: what the evidence actually shows about this common preservative
BeginnerSodium Nitrite in Processed Meat: Risk vs Reality
Sodium nitrite cancer risk explained: what nitrosamines are, what the IARC processed meat classification actually means, and the botulism tradeoff
BeginnerSoy Lecithin: The Emulsifier in Almost Everything
What is soy lecithin, how it works as an emulsifier, the soy allergy question, GMO concerns, and why it's in your chocolate. Explained clearly.
BeginnerStevia: What's Left After You Process a 'Natural' Sweetener
Is stevia healthy? The difference between stevia leaves and commercial steviol glycosides, what Reb-A means, and what the research shows
BeginnerSucralose: How Chlorinated Sugar Became Splenda
Is sucralose safe? The chemistry behind Splenda, the chlorine concern explained, and what 2023 microbiome research actually found
IntermediateSunflower Lecithin vs Soy Lecithin: Are They the Same Thing?
Sunflower lecithin and soy lecithin do the same job in food. Learn the real differences, why the soy allergy concern is mostly overblown, and what to choose.
BeginnerTBHQ: What This Preservative Does and Why Regulators Are Watching It
What is TBHQ in food? This synthetic antioxidant is in frying oils and snack foods. Here's what the science shows about its safety and why it's on FDA's review list
IntermediateTitanium Dioxide in Food: What the Science Shows About E171
Is titanium dioxide safe in food? The EU banned E171 in 2022. EFSA cited genotoxicity concerns. The US still permits it. Here's what the nanoparticle research shows
IntermediateVanillin vs Real Vanilla: Why They Taste Different and What's Worth Paying For
Is vanillin the same as vanilla? The chemistry of vanilla's 250+ compounds, when the price difference matters, and why 'natural vanilla flavor' may not mean vanilla beans
BeginnerWhy Apples and Candy Are Coated in Wax: The Carnauba Story
Carnauba wax coats apples, candy, and pills to extend shelf life and add shine. Learn where it comes from, what it does, and why the FDA considers it safe.
BeginnerXanthan Gum: Why It's in Everything and Whether That's Fine
What is xanthan gum, how it works as a thickener, its role in gluten-free baking, and what safety research shows about regular consumption
BeginnerYeast Extract: The 'Natural' Ingredient That Adds Umami Without Saying MSG
Is yeast extract the same as MSG? The glutamate content explained, why 'no MSG' products can still contain free glutamate, and what this means for consumers
Intermediate