{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,16]],"date-time":"2026-10-16T05:52:22Z","timestamp":1792129942647,"version":"4.4.0"},"reference-count":77,"publisher":"MDPI AG","issue":"17","license":[{"start":{"date-parts":[[2023,8,22]],"date-time":"2023-08-22T00:00:00Z","timestamp":1692662400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Fonterra Co-operative Group Limited, Auckland 1010, New Zealand"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Foods"],"abstract":"<jats:p>\u03b2-Casomorphin-7 (BCM-7) is a peptide released through the proteolysis of \u03b2-casein (\u03b2-CN), which is considered a bioactive peptide displaying evidence of promoting the binding and activation of the \u03bc-opioid receptor located in various body parts, such as the gastrointestinal tract, the immune system and potentially the central nervous system. The possible effects of BCM-7 on health are a theme rising in popularity due to evidence found in several studies on the modulation of gastrointestinal proinflammatory responses that can trigger digestive symptoms, such as abdominal discomfort. With the advancement of studies, the hypothesis that there is a correlation of the possible effects of BCM-7 with the microbiota\u2013gut\u2013brain axis has been established. However, some studies have suggested the possibility that these adverse effects are restricted to a portion of the population, and the topic is controversial due to the small number of in vivo studies, which makes it difficult to obtain more conclusive results. In addition, a threshold of exposure to BCM-7 has not yet been established to clarify the potential of this peptide to trigger physiological responses at gastrointestinal and systemic levels. The proportion of the population that can be considered more susceptible to the effects of BCM-7 are evidenced in the literature review. The challenges of establishing the adverse effects of BCM-7 are discussed, including the importance of quantifying the BCM-7 release in the different \u03b2-CN genotypes. In summary, the reviewed literature provides plausible indications of the hypothesis of a relationship between \u03b2-CN A1\/BCM-7 and adverse health effects; however, there is need for further, especially in vivo studies, to better understand and confirm the physiological effects of this peptide.<\/jats:p>","DOI":"10.3390\/foods12173151","type":"journal-article","created":{"date-parts":[[2023,8,22]],"date-time":"2023-08-22T09:10:56Z","timestamp":1692695456000},"page":"3151","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":36,"title":["Difficulties in Establishing the Adverse Effects of \u03b2-Casomorphin-7 Released from \u03b2-Casein Variants\u2014A Review"],"prefix":"10.3390","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4675-6802","authenticated-orcid":false,"given":"Marta Liliane","family":"de Vasconcelos","sequence":"first","affiliation":[{"name":"Department of Veterinary Medicine, Faculty of Animal Science and Food Engineering, University of S\u00e3o Paulo, Pirassununga 13635-900, SP, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2840-7614","authenticated-orcid":false,"given":"Luisa Maria F. S.","family":"Oliveira","sequence":"additional","affiliation":[{"name":"Department of Veterinary Medicine, Faculty of Animal Science and Food Engineering, University of S\u00e3o Paulo, Pirassununga 13635-900, SP, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jeremy Paul","family":"Hill","sequence":"additional","affiliation":[{"name":"Department Sustainable Nutrition Initiative, Riddet Institute, Palmerston North, New Zealand, and Fonterra Research & Development Centre, Palmerston North 4472, New Zealand"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ana Maria Centola","family":"Vidal","sequence":"additional","affiliation":[{"name":"Department of Veterinary Medicine, Faculty of Animal Science and Food Engineering, University of S\u00e3o Paulo, Pirassununga 13635-900, SP, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,8,22]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"716100","DOI":"10.3389\/fnut.2021.716100","article-title":"Modeling the Contribution of Milk to Global Nutrition","volume":"8","author":"Smith","year":"2022","journal-title":"Front. 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