{"id":2615,"date":"2026-02-12T11:54:45","date_gmt":"2026-02-12T02:54:45","guid":{"rendered":"http:\/\/kanka.cmes.ehime-u.ac.jp\/en\/?p=2615"},"modified":"2026-02-12T11:57:00","modified_gmt":"2026-02-12T02:57:00","slug":"widespread-pfas-contamination-detected-in-commercial-pet-food-fish-based-ingredients-identified-as-major-exposure-source","status":"publish","type":"post","link":"http:\/\/kanka.cmes.ehime-u.ac.jp\/en\/news_event\/news\/2615.html","title":{"rendered":"Widespread PFAS Contamination Detected in Commercial Pet Food: Fish-Based Ingredients Identified as Major Exposure Source"},"content":{"rendered":"

Overview<\/h2>\n

Researchers at the Center for Marine Environmental Studies (CMES), Ehime University, conducted a comprehensive analysis of 100 commercially available dog and cat food products in Japan. Thirty-four PFAS compounds were quantified.<\/p>\n

PFAS were frequently detected, particularly in fish-based products. Hazard quotient (HQ) calculations based on EFSA tolerable intake values exceeded 1 for several products, suggesting potential health risks to companion animals.<\/p>\n

This study provides the first systematic large-scale evidence of ingredient-driven PFAS contamination in pet food and highlights the need for regulatory oversight and species-specific toxicological evaluation.<\/p>\n

\"\"<\/p>\n

Details<\/h2>\n

Key Findings<\/h3>\n
    \n
  1. \n

    Frequent detection of PFAS across products<\/strong>
    Dry foods showed higher concentrations, whereas wet foods resulted in higher estimated daily intake due to larger feeding volumes.<\/p>\n<\/li>\n

  2. \n

    Fish-based ingredients as major contamination drivers<\/strong>
    Products listing fish as the primary ingredient contained significantly higher \u03a3PFAS levels. Long-chain PFCAs such as PFUnDA and PFTrDA, as well as PFOS, were dominant.<\/p>\n<\/li>\n

  3. \n

    Country-of-origin specific PFAS patterns<\/strong>
    PCA revealed clustering differences between Asian and U.S. products. The PFOS alternative F-53B\u2013related compound (9Cl-PF3ONS) was detected in some Asian-manufactured products.<\/p>\n<\/li>\n

  4. \n

    Hazard Quotients exceeding 1<\/strong>
    EFSA-based HQ estimates for the sum of four PFAS (PFOS, PFOA, PFNA, PFHxS) exceeded 1 in multiple products, especially wet food.<\/p>\n<\/li>\n<\/ol>\n

     <\/p>\n

    Publication Information<\/h2>\n

    Journal: Environmental Pollution<\/p>\n

    Title: Widespread PFAS contamination in pet food: Dietary sources and health risks to companion animals<\/p>\n

    Authors: Kei Nomiyama*, Aika Sato, Rumi Tanoue, Kohei Saeki, Yoshinori Ikenaka, Hazuki Mizukawa<\/p>\n

    DOI: 10.1016\/j.envpol.2026.127779<\/p>\n

    URL:
    https:\/\/doi.org\/10.1016\/j.envpol.2026.127779<\/a><\/p>\n

    \n","protected":false},"excerpt":{"rendered":"

    Overview Researchers at the Center for Marine Environmental Studies (CMES), Ehime University, conducted a comp […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[38],"tags":[],"class_list":["post-2615","post","type-post","status-publish","format-standard","hentry","category-news"],"acf":[],"_links":{"self":[{"href":"http:\/\/kanka.cmes.ehime-u.ac.jp\/en\/wp-json\/wp\/v2\/posts\/2615","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/kanka.cmes.ehime-u.ac.jp\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/kanka.cmes.ehime-u.ac.jp\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/kanka.cmes.ehime-u.ac.jp\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/kanka.cmes.ehime-u.ac.jp\/en\/wp-json\/wp\/v2\/comments?post=2615"}],"version-history":[{"count":2,"href":"http:\/\/kanka.cmes.ehime-u.ac.jp\/en\/wp-json\/wp\/v2\/posts\/2615\/revisions"}],"predecessor-version":[{"id":2618,"href":"http:\/\/kanka.cmes.ehime-u.ac.jp\/en\/wp-json\/wp\/v2\/posts\/2615\/revisions\/2618"}],"wp:attachment":[{"href":"http:\/\/kanka.cmes.ehime-u.ac.jp\/en\/wp-json\/wp\/v2\/media?parent=2615"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/kanka.cmes.ehime-u.ac.jp\/en\/wp-json\/wp\/v2\/categories?post=2615"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/kanka.cmes.ehime-u.ac.jp\/en\/wp-json\/wp\/v2\/tags?post=2615"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}