Nutrigenomics of Vitamin D.

Area of Science:

• Nutrigenomics
• Molecular Biology
• Human Genetics

Background:

• Nutrigenomics explores how diet and lifestyle affect genome expression.
• Vitamin D₃ (cholecalciferol) is a key nutrigenomic example, influencing epigenome and transcriptome via its metabolite 1α,25-dihydroxyvitamin D₃.
• Vitamin D is crucial for calcium homeostasis, cellular metabolism, and immune system modulation.

Purpose of the Study:

• To review the interaction between vitamin D and the human genome.
• To focus on nutritional epigenomics and its role in immune responses.
• To enhance understanding of vitamin D's clinical benefits.

Main Methods:

• Literature review focusing on nutrigenomics and vitamin D.
• Analysis of vitamin D's molecular pathways affecting gene expression.
• Examination of evolutionary adaptations related to vitamin D synthesis.

Main Results:

• Vitamin D₃ metabolite binds to the vitamin D receptor, altering gene expression at thousands of genomic loci.
• Endogenous vitamin D₃ synthesis via UV-B exposure drove evolutionary skin pigmentation changes.
• Modern lifestyles necessitate dietary or supplemental vitamin D₃ for optimal health.

Conclusions:

• Personalized vitamin D₃ supplementation can optimize clinical benefits for osteoporosis, sarcopenia, autoimmune diseases, and cancer prevention.
• Understanding vitamin D's genomic interactions is vital for personalized nutrition and disease prevention.
• Further research into nutritional epigenomics and immune responses can elucidate vitamin D's full potential.