MD Anderson patient article on vitamin D sources, deficiency, supplements, and safe sun exposure.
Vitamin D
Vitamin D is a fat-soluble prohormone involved in calcium balance, immune signaling, inflammation control, cell differentiation, and vitamin D receptor activity in many tissues. In cancer, the interest centers on deficiency correction, observational links with risk and survival, and mixed but important randomized-trial evidence suggesting stronger signals for cancer mortality or progression than for preventing cancer incidence.
Post hoc AMATERASU subgroup analysis examining vitamin D effects in p53-immunoreactive digestive tract cancer.
Individual patient data meta-analysis of randomized trials evaluating vitamin D3 supplementation and cancer mortality.
Meta-analysis separating daily vitamin D supplementation from intermittent large-bolus dosing for cancer incidence and mortality outcomes.
Historical review of vitamin D/cancer epidemiology, mechanisms, and the evolution of the vitamin D cancer hypothesis.
Secondary VITAL trial analysis evaluating whether vitamin D reduced advanced metastatic or fatal cancer outcomes.
Public review of vitamin D, colorectal/breast cancer survival associations, randomized trials, and cancer mortality.
AMATERASU randomized clinical trial of vitamin D supplementation after digestive tract cancer treatment.
NaturalNews article on vitamin D, vitamin B3, sunlight, and skin cancer risk.
NaturalNews review-style article collecting studies and claims about vitamin D and cancer prevention/survival.
NaturalNews article discussing vitamin D and aggressive/triple-negative breast cancer prevention and treatment claims.
NaturalNews article presenting strong claims about vitamin D, sun exposure, cancer risk, and conventional oncology.
NaturalNews article arguing that higher vitamin D intakes may be needed to reach blood levels associated with reduced cancer and chronic disease risk.
NaturalNews article collecting excerpts and claims about vitamin D, breast cancer biology, and breast cancer prognosis.
Video/article summary of randomized trial evidence on vitamin D, diabetes, cancer mortality, and overall mortality.
Cancer Research UK guidance on vitamin D, sun exposure, skin cancer risk, and supplementation recommendations.
MSK integrative medicine monograph summarizing vitamin D forms, potential anticancer mechanisms, clinical evidence, and cautions.
NIH ODS professional fact sheet covering vitamin D intake, status, deficiency, toxicity, interactions, and health outcomes including cancer.
NCI fact sheet explaining vitamin D biology, sources, recommended intake, observational evidence, randomized trials, and cancer prevention/mortality uncertainty.