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NewsKPBS Public MediaAugust 4, 2026San Diego

UC Davis study finds widespread mislabeling in avocado oil products

A recent UC Davis study found that 89% of 54 tested products labeled as containing only avocado oil were adulterated with other oils, potentially violating federal food-labeling regulations. The findings highlight the prevalence of 'healthwashing,' where companies use misleading marketing buzzwords to justify premium pricing for products that may not be healthier than cheaper alternatives.

food safetyconsumer protectionmarketingnutritionfood labelingeconomics
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Why It Matters

Consumers may be paying premium prices for products that do not contain the ingredients advertised, raising concerns about the accuracy of food labels and the effectiveness of federal oversight.

Key Facts

  • Researchers at UC Davis analyzed 54 products labeled as containing only avocado oil.
  • 89% of the tested products appeared to be adulterated with other, cheaper oils.
  • At least one product tested contained no avocado oil at all.
  • Mislabeling products as containing only avocado oil when they contain other oils may violate federal food-labeling rules.
  • The study did not determine if the brands were aware of the adulteration or who introduced the other oils.
  • The 'health halo effect' is a cognitive bias where consumers assume a product is healthier based on a single marketing claim or visual cue.
  • Asymmetric information occurs when one side of a transaction has less information than the other, creating opportunities for businesses to mislead consumers.
  • The FDA is responsible for food system oversight, though the article notes potential blind spots in this process.

Who's Mentioned

personMaria Godoy“NPR reporter who covered the study.”organizationFDA“Federal agency responsible for food system oversight.”other54“Number of avocado oil products tested in the study.”organizationUC Davis“Researchers conducted a chemical analysis of avocado oil products.”personMarion Nestle“Emerita professor of nutrition and food policy expert.”