Journal
NUTRIENTS
Volume 5, Issue 10, Pages 3993-4021Publisher
MDPI
DOI: 10.3390/nu5103993
Keywords
vitamin D; cancer; mechanisms; ecological studies; observational studies; prevention; animal models
Categories
Funding
- Bio-Tech Pharmacal (Fayetteville, AR)
- Sunlight Research Forum (Veldhoven)
- UV Foundation (McLean, VA)
- Vitamin D Council (San Luis Obispo, CA)
- Vitamin D Society (Canada)
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The metabolite of vitamin D, 1,25-dihydroxyvitamin D-3 (also known as calcitriol), is a biologically active molecule required to maintain the physiological functions of several target tissues in the human body from conception to adulthood. Its molecular mode of action ranges from immediate nongenomic responses to longer term mechanisms that exert persistent genomic effects. The genomic mechanisms of vitamin D action rely on cross talk between 1,25-dihydroxyvitamin D-3 signaling pathways and that of other growth factors or hormones that collectively regulate cell proliferation, differentiation and cell survival. In vitro and in vivo studies demonstrate a role for vitamin D (calcitriol) in modulating cellular growth and development. Vitamin D (calcitriol) acts as an antiproliferative agent in many tissues and significantly slows malignant cellular growth. Moreover, epidemiological studies have suggested that ultraviolet-B exposure can help reduce cancer risk and prevalence, indicating a potential role for vitamin D as a feasible agent to prevent cancer incidence and recurrence. With the preventive potential of this biologically active agent, we suggest that countries where cancer is on the riseyet where sunlight and, hence, vitamin D may be easily acquiredadopt awareness, education and implementation strategies to increase supplementation with vitamin D in all age groups as a preventive measure to reduce cancer risk and prevalence.
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