What is Vitamin D?
Vitamin D is a fat-soluble vitamin that has various key health benefits including contributing to good bone health, immunity and positive mood. Vitamin D exists primarily in two forms vitamin D3, (produced in the skin and found in animal-derived foods such as fatty fish and egg yolks) and vitamin D2 (derived from plant and fungal sources).
Health Benefits:
Supports Bone Health
Vitamin D can contribute to healthy bone growth and maintenance. Research has shown that consistently low levels of vitamin D intake can lead to bone demineralization and that deficiency in this vitamin can lead to reduced calcium absorption and ultimately the release of calcium from the bones. These effects on bone mineral density can weaken the bones, making them more vulnerable to fractures.
Boosts Immunity
Impaired immune system function has been repeatedly linked to deficiency in vitamin D. Studies evidence that vitamin D can regulate several key genes involved in the modulation of the immune system, for instance the differentiation of immune cells. Further highlighting this vitamin's vital role in immunity, low levels of vitamin D has been associated with various autoimmune diseases including multiple sclerosis, inflammatory bowel disease and type 1 diabetes.
Enhances Mood
Research indicates that vitamin D plays a vital role in mood regulation and may be key to a good emotional wellbeing. For instance, studies show low levels of vitamin D are associated with increased symptoms of depression and anxiety. This is particularly important as mood not only significantly effects quality of life and daily activity, but has been suggested to have implications for physical health including links between good mental health and mood with lower blood pressure, stronger immune system function, reduced risk of heart disease and healthier weight.
Typical Use:
Vitamin D is commonly used as a daily supplement, particularly in countries with limited year-round sunlight. Supplement formulations sometimes combine vitamin D with vitamin K2, calcium, or magnesium for synergistic effects.
Sources:
https://pmc.ncbi.nlm.nih.gov/articles/PMC3257679/
https://pmc.ncbi.nlm.nih.gov/articles/PMC3738984/
https://www.sciencedirect.com/science/article/pii/S0014480023000175
