What Is Vitamin D?
Vitamin D is an essential nutrient which supports immune health, promotes calcium absorption and maintains bone growth. (1) Sunlight exposure can help our skin to produce vitamin D, so in the winter months you might want to supplement your levels.
There are two forms vitamin D: D2 and D3.
Whilst both types are important, vitamin D3 is more biologically active than D2. Evidence suggests that vitamin D3 is more effective in raising serum 25-hydroxyvitamin D levels (25(OH)D) where, in the kidneys it changes into an active form of vitamin D. The active form of vitamin D helps control calcium and phosphate levels in the body.
What foods contain vitamin D3?
Your body can make vitamin D, but this comes from exposure to sunlight — that’s why it’s known as the sunshine vitamin.
You can find vitamin D3 in small traces in foods like oily fish, egg yolks, and fortified food — but most people don’t get enough in their everyday diet. That’s where we come in.
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