The Dirty List

The Ingredients the Food Industry Doesn’t Explain.

These are the processed and ultra-processed ingredients that show up in everyday products. What they are, where they hide, what the research says, and what you can use instead. No fear. Just facts.

Harmful Ingredients

TBHQ (tert-Butylhydroquinone)

Description:

TBHQ (tert-Butylhydroquinone) is a petroleum-derived synthetic antioxidant used to prevent fats and oils from going rancid. It extends shelf life in processed foods, especially those cooked in or containing industrial oils. The FDA permits it at concentrations up to 0.02% of a food’s fat content, but that low limit itself signals how potent this chemical is.

Found In:

  • Fast food (especially fried items like chicken nuggets and fries)
  • Microwave popcorn
  • Frozen pizza and frozen meals
  • Crackers, chips, and packaged snacks
  • Ramen noodles and instant soups
  • Commercial cooking oils and shortening
  • Processed peanut butter

Health Impact:

TBHQ has raised red flags in toxicology research. At higher doses in animal studies, it caused stomach tumors and DNA damage. The National Library of Medicine notes that ingesting 1 gram of TBHQ can cause nausea, vomiting, ringing in the ears, and delirium. A 2020 study from the Environmental Working Group found TBHQ in over 1,250 processed foods in the U.S. food supply. Research published in the International Journal of Molecular Sciences linked TBHQ exposure to immune system dysregulation, potentially weakening the body’s response to infections and reducing vaccine effectiveness. While individual servings contain small amounts, daily exposure across multiple processed foods creates a cumulative concern.

Healthier Alternatives:

  • Foods preserved with vitamin E (tocopherols) instead of TBHQ
  • Snacks cooked in coconut oil, avocado oil, or olive oil
  • Air-popped popcorn with real butter instead of microwave bags
  • Homemade versions of fried foods using stable cooking fats
  • Check labels for “TBHQ” or “tert-Butylhydroquinone” in the ingredient list

Scientific Evidence:

  • EFSA Panel on Food Additives (2004): Safety assessment noting liver enlargement and tumor promotion in animal studies at elevated doses
  • Gharavi et al. (2007, International Journal of Molecular Sciences): TBHQ modulates immune cell function, potentially impairing T-cell mediated immune responses
  • National Library of Medicine Toxicology Profile: Documents acute toxicity symptoms at 1g ingestion including nausea, vomiting, tinnitus, delirium
  • Butchko & Voelker (1997, Food and Chemical Toxicology): Review of TBHQ safety showing dose-dependent stomach forestomach hyperplasia in rodents
Screenshot of Diet Discipline website

Swap Smart ✅

Quick Swaps

Microwave popcorn with TBHQ → ✅ Air-popped popcorn with real butter and sea salt
Fast-food fried chicken → ✅ Oven-baked chicken with avocado oil coating
Instant ramen noodles → ✅ Rice noodles in homemade bone broth

Same satisfaction, minus the petroleum byproducts.