Hermetica Superfood Encyclopedia
The Short Answer
Often called the 'sunshine vitamin,' Vitamin D is a critical nutrient that strengthens bones, supports immune function, and helps regulate mood — especially important for people with limited sun exposure.
CategoryVitamin & Mineral
GroupVitamin
Evidence LevelModerate
Synergy Pairings4
Health Benefits
Facilitates calcium and phosphorus absorption in the gut, supporting bone mineralization, density, and structural resilience.
Enhances innate immune responses by upregulating antimicrobial peptides and modulates adaptive immunity to reduce chronic inflammation.
Maintains serum calcium-phosphate balance critical for muscle contraction, nerve transmission, and cardiovascular rhythm.
Improves muscle strength and neuromuscular coordination, particularly in aging populations, reducing fall risk.
Influences serotonin synthesis and receptor expression, contributing to emotional balance and potentially alleviating symptoms of SAD.
Prevents skeletal deformities (rickets), bone softening (osteomalacia), fatigue, immune suppression, and mood disorders associated with deficiency.
Origin & History
Vitamin D is a fat-soluble secosteroid essential for the regulation of calcium-phosphate homeostasis, skeletal integrity, and immune modulation. Synthesized in the skin upon exposure to ultraviolet B (UVB) rays, it is also present in dietary sources such as fatty fish, UV-exposed mushrooms, fortified dairy, and egg yolks. Vitamin D functions as both a nutrient and a hormone, influencing over 2,000 genes and modulating critical biological systems from bone matrix deposition to immunological vigilance.
“The understanding of Vitamin D emerged in the early 20th century with the discovery of its role in preventing rickets, a disease prevalent in sun-deprived populations. Its connection to sunlight exposure has been recognized across cultures, with sunbathing and outdoor activities traditionally valued for health, long before its biochemical mechanisms were fully understood.”Traditional Medicine
Scientific Research
Extensive research published in journals such as the Journal of Steroid Biochemistry & Molecular Biology and supported by institutions like the National Institutes of Health (NIH) confirms Vitamin D's critical roles. Studies on PubMed detail its profound impact on immunity, bone metabolism, and overall systemic health.
Preparation & Dosage
General
Commonly available as dietary supplements in capsule, tablet, or liquid drop forms.
General
Often combined with Vitamin K2 (Menaquinone) in bone and joint blends for guided calcium deposition and vascular protection.
General
Synergizes with zinc and quercetin in immune formulas for enhanced pathogen resistance.
General
Pairs with magnesium and 5-HTP (5-Hydroxytryptophan) in mood and sleep synergy blends to support neurotransmitter synthesis.
General
Typical daily dosages range from 1000-4000 IU, adjusted based on individual needs and blood levels, under professional guidance.
Nutritional Profile
- Cholecalciferol (D3): The most bioactive form of vitamin D, endogenously synthesized in the skin.
- Calcium & Phosphorus Enhancer: Regulates key minerals for skeletal and systemic function.
- Immunomodulator: Influences T-cell and macrophage activity, supporting immune balance.
Synergy Stack
Hermetica Formulation Heuristic
Cofactor vitamin
Immune & Inflammation | Mood & Stress
Frequently Asked Questions
What is Vitamin D (Cholecalciferol)?
Vitamin D is a fat-soluble secosteroid that functions as both a vitamin and a hormone. It is synthesized in the skin upon UVB exposure and is essential for calcium absorption, bone health, immune regulation, and mood support. It influences over 2,000 genes in the human body.
How much Vitamin D should I take and how do I know if I'm deficient?
Most adults benefit from 1000-2000 IU daily, though those with deficiency may need higher doses. A simple blood test measuring serum 25(OH)D levels is the gold standard for assessing status. Levels below 20 ng/mL indicate deficiency, while 30-60 ng/mL is considered optimal.
Should I take Vitamin D with Vitamin K2?
Combining Vitamin D with Vitamin K2 (MK-7) is widely recommended because Vitamin D increases calcium absorption while K2 activates proteins that direct calcium into bones and teeth rather than soft tissues and arteries. This synergy supports both skeletal and cardiovascular health.
Explore the Full Encyclopedia
7,400+ ingredients researched, verified, and formulated for optimal synergy.
Browse IngredientsThese statements have not been evaluated by the Food and Drug Administration. This content is for informational purposes only and is not intended to diagnose, treat, cure, or prevent any disease.
