{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,8]],"date-time":"2026-04-08T16:23:28Z","timestamp":1775665408827,"version":"3.50.1"},"reference-count":53,"publisher":"MDPI AG","issue":"8","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\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nutrients"],"abstract":"<jats:p>Recent findings in nutritional epidemiology report an association between high dietary phosphorus intake and increased cancer risk. Building on the author\u2019s analysis of breast cancer incidence in the Study of Women\u2019s Health Across the Nation (SWAN), this paper presents a theoretical\u2013conceptual model and a hypothesis to guide further population-study replication. To strengthen the initial SWAN analysis signal, a sensitivity analysis increased the number of controls in the nested case\u2013control design from four to five per case. This adjustment modestly raised the relative risk (RR) of breast cancer incidence among middle-aged women consuming &gt;1800 mg\/day of dietary phosphorus (compared with 800\u20131000 mg\/day) from RR: 2.30 to 2.38 (95% CI: 0.95\u20135.95; p = 0.06), improving statistical precision from the original p = 0.07. However, the result remains an exploratory pilot signal, not a confirmed association. Because clinical trials cannot ethically expose participants to potential harm from phosphate toxicity, a confirmed association relies on observational research. As in historical tobacco\u2013cancer investigations, secondary analyses are needed across large cohort studies to examine dietary phosphorus intake and incidence of major cancer types. Relevant cohorts include the Nurses\u2019 Health Study, Women\u2019s Health Initiative, Health Professionals Follow-Up Study, National Health and Nutrition Examination Survey (NHANES) Epidemiologic Follow-Up Study, European Prospective Investigation into Cancer and Nutrition (EPIC), and the Canadian Study of Diet, Lifestyle and Health. Effect estimates can be synthesized using meta-analytic methods following PRISMA-P 2015 guidelines. Dietary phosphate modification may offer a cancer prevention strategy with substantial public health impact and clinical implications.<\/jats:p>","DOI":"10.3390\/nu18081177","type":"journal-article","created":{"date-parts":[[2026,4,8]],"date-time":"2026-04-08T15:26:39Z","timestamp":1775661999000},"page":"1177","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Phosphorus Intake and Cancer Risk: A Theoretical\u2013Conceptual Model and Hypothesis for Population-Study Replication"],"prefix":"10.3390","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9473-2274","authenticated-orcid":false,"given":"Ronald B.","family":"Brown","sequence":"first","affiliation":[{"name":"Waterloo Institute for Complexity and Innovation, University of Waterloo, Waterloo, ON N2L 3G1, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2026,4,8]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"752","DOI":"10.1016\/j.trecan.2023.06.003","article-title":"Diet, nutrient supply, and tumor immune responses","volume":"9","author":"McIntyre","year":"2023","journal-title":"Trends Cancer"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"1825","DOI":"10.1016\/j.ccell.2024.09.010","article-title":"The hallmarks of cancer immune evasion","volume":"42","author":"Galassi","year":"2024","journal-title":"Cancer Cell"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"m511","DOI":"10.1136\/bmj.m511","article-title":"Diet, nutrition, and cancer risk: What do we know and what is the way forward?","volume":"368","author":"Key","year":"2020","journal-title":"BMJ"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"k822","DOI":"10.1136\/bmj.k822","article-title":"Dietary guidelines and health\u2014Is nutrition science up to the task?","volume":"360","author":"Mozaffarian","year":"2018","journal-title":"BMJ"},{"key":"ref_5","unstructured":"National Institutes of Health (NIH) Office of Dietary Supplements (2026, February 05). 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