{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,8]],"date-time":"2026-04-08T13:00:11Z","timestamp":1775653211555,"version":"3.50.1"},"reference-count":196,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2026,4,8]],"date-time":"2026-04-08T00:00:00Z","timestamp":1775606400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Science Center in Poland","award":["2022\/47\/O\/NZ7\/01089"],"award-info":[{"award-number":["2022\/47\/O\/NZ7\/01089"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Life"],"abstract":"<jats:p>Aging and obesity accompanied with hormonal disequilibrium represent critical, inter-related risk factors for breast cancer, significantly influencing disease incidence, progression, and therapeutic outcomes. This review aims to elucidate the multifaceted biological mechanisms linking obesity and aging to breast carcinogenesis, with a particular focus on the emerging therapeutic and preventive potential of postbiotics as molecules targeting cellular events important for cancer growth and responsiveness. Despite continuous advancement, breast cancer therapy still poses several challenges, such as treatment-induced acquired resistance, which is boosted by the inflammatory phenotype of senescent cancerous cells, as well as undesired side effects resulting from the destruction of normal cells. Such a complex background of breast carcinogenesis and oncotherapy resistance opens avenues to search for new preventive approaches and adjunctive treatment regimens. Postbiotics demonstrate a variety of benefits due to their selective antineoplastic activity, as well as the cytoprotective potential associated with antioxidant, anti-inflammatory and anti-senescent properties. Pleiotropic effects of postbiotics make them a promising tool for counteracting cellular and physiological disturbances that favor breast cancer development, including age- and obesity-related factors. They are prospective adjunctive agents in oncotherapy, albeit their efficacy and safety need to be thoroughly evaluated in clinical studies prior to implementation in routine treatment modes.<\/jats:p>","DOI":"10.3390\/life16040628","type":"journal-article","created":{"date-parts":[[2026,4,8]],"date-time":"2026-04-08T11:41:18Z","timestamp":1775648478000},"page":"628","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Postbiotics as Emerging Strategy Targeting Obesity- and Aging-Related Breast Cancer\u2014Prospects in Prophylaxis and Therapy"],"prefix":"10.3390","volume":"16","author":[{"given":"Joanna","family":"Wasiak","sequence":"first","affiliation":[{"name":"Department of Medical Biochemistry, Medical University of Lodz, 6\/8 Mazowiecka Str., 92-215 Lodz, Poland"},{"name":"International Doctoral School, Medical University of Lodz, 90-419 Lodz, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7070-8720","authenticated-orcid":false,"given":"Katarzyna Anna","family":"Oszajca","sequence":"additional","affiliation":[{"name":"Department of Medical Biochemistry, Medical University of Lodz, 6\/8 Mazowiecka Str., 92-215 Lodz, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6052-3557","authenticated-orcid":false,"given":"Janusz","family":"Szemraj","sequence":"additional","affiliation":[{"name":"Department of Medical Biochemistry, Medical University of Lodz, 6\/8 Mazowiecka Str., 92-215 Lodz, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8556-2859","authenticated-orcid":false,"given":"Monika","family":"Witusik-Perkowska","sequence":"additional","affiliation":[{"name":"Department of Medical Biochemistry, Medical University of Lodz, 6\/8 Mazowiecka Str., 92-215 Lodz, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2026,4,8]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"e20224","DOI":"10.1016\/j.heliyon.2023.e20224","article-title":"Estrogens and the Risk of Breast Cancer: A Narrative Review of Literature","volume":"9","author":"Awadi","year":"2023","journal-title":"Heliyon"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"49","DOI":"10.1038\/s41392-024-02108-4","article-title":"Breast Cancer: Pathogenesis and Treatments","volume":"10","author":"Xiong","year":"2025","journal-title":"Signal Transduct. 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