What Is It?
- A fat-soluble vitamin, which means it is best absorbed if you take it with avocado or some other source of healthy fat
- Created by the body when skin is exposed to sunlight, which is why it’s called “the sunshine vitamin”
- Other sources include fatty fish (like salmon), egg yolks and fortified dairy products
How Does It Support Immune Health?
- Studies have shown a link between deficiency and impaired immune function†
- Has shown an ability to improve the body’s defenses against infection†
- Helps regulate the immune system so that it reacts properly to genuine threats without becoming overactive and attacking the body’s own tissues†
What Are Its Other Functions?
- Helps calcium build strong bones and teeth
- Has been linked to cardiovascular well-being
- Low levels have been associated with increased risk of type 2 diabetes†
- Plays a role in regulating the nervous system
What Supplemental Forms Are Best?
- Vitamin D3, unlike D2, is more effective in raising blood levels
- Available in strengths up to 5,000 IU and in a variety of forms—including tablets, softgels, capsules, chewables and liquids
- Children’s formulations also available
What Else Should I Know?
Lack of sun exposure due to people spending more time indoors has resulted in widespread suboptimal levels of vitamin D (one study found an overall US deficiency rate of more than 41%)
†The information provided is not an endorsement of any product, and is intended for educational purposes only. NaturesPlus does not provide medical advice and does not offer diagnosis of any conditions. Current research on this topic is not conclusive and further research may be needed in order to prove the benefits described.