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Vitamin D: Why the Sunshine Vitamin Matters

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All NiaHealth tests are processed in Canadian-certified labs, which are highly trusted by the medical community for their accuracy and reliability. Blood and urine samples are collected by licensed medical professionals and processed using state-of-the-art equipment. NiaHealth is SOC2 Type 2 certified.

Vitamin D, often referred to as the 'sunshine vitamin,' is a fat-soluble vitamin with a profound impact on overall health and well-being. One of its primary functions is the regulation of calcium and phosphorus levels in the body. Vitamin D aids in the absorption of these essential minerals from the digestive tract and supports their incorporation into bone structure, crucial for maintaining strong bones and teeth.

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NiaHealth memberships include Vitamin D testing twice a year, along with 60+ other biomarkers, at no additional cost.

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SOC2 Type 2 certified

Why it matters

Vitamin D also plays a significant role in immune system function, helping to fend off infections and diseases. Vitamin D is involved in cellular growth, reducing inflammation, and supporting neuromuscular function. Moreover, it may influence various aspects of health, from heart health to cognitive function.

Low vitamin D levels can lead to weakened bones, known as osteoporosis, and a higher risk of fractures. Deficiency can also affect the immune system, potentially increasing susceptibility to infections.

Reference ranges

Tanya ter Keurs
Clinically reviewed by  
Tanya ter Keurs
, NP · Last reviewed  
2026-08-05

This information is educational and does not replace medical advice, diagnosis, or treatment. Your results should be interpreted with a qualified healthcare professional in the context of your health history.