$4.99 Standard Shipping! See details
Free Shipping Icon


America's #1 Rated
Catalog/Internet Brand
Based on Customer Satisfaction
For Help or to Order 1-800-824-4491 Call or Chat
Eco Catalog

Vitamin D

If you don’t get the Lee Swanson Research Update emails every week, you might not be aware of all the new research being done on vitamin D, also known as the “sunshine vitamin.” Study after study is looking into the increasingly wide range of health benefits vitamin D offers the human body. Though it is naturally produced through exposure to sunlight, modern lifestyles that keep us indoors the majority of the time make it difficult for most of us to get enough vitamin D the way Mother Nature intended. Thus, the need for supplementation is real, especially for people who live far from the equator and endure long, dark winter months.

So what exactly is vitamin D? It’s a fat-soluble vitamin that is essential for the growth and mineralization of bones, as well as for the absorption of calcium. Two forms of vitamin D are important for humans: ergocalciferol (vitamin D2) and cholecalciferol (vitamin D3). D2 is synthesized by plants, and D3 is synthesized by humans in the skin when it is exposed to ultraviolet-B (UVB) rays from sunlight. Recent research is also pointing to potential immune-supporting benefits of vitamin D. Contrary to its original classification as a vitamin, vitamin D is really in a class of its own, functioning more like a hormone that targets over 2,000 genes in the human body (roughly 10% of our entire genome).

Conclusion: Vitamin D is essential to human health. While the human body naturally produces it from exposure to sunlight, we are getting less and less of this exposure as we live more and more indoors. Known for its major role in supporting strong, healthy bones, vitamin D is also becoming known as a valuable immune supporting nutrient, especially for seasonal wellness. Help protect your bones and your immune system by adding a vitamin D supplement to your regimen.

Return to the Vitamin D Plus the 7 Basic Supplements for Good Health introduction

comments powered by Disqus
New to Natural Health?
  • Text Resize: A  A
  • Email this pagePrint
  • Bookmark and Share
Customer Service
  • Live Chat
    (8am-11pm Central Time daily)
  • Call Us
  • Para Ordenes en Español
  • 1-800-254-1885
Loco for Coco?

Need help? Call Us Now

We Accept
  • Visa
  • MasterCard
  • AmEx
  • Discover
  • JCB
  • Diners Club
  • PayPal

Secured by Entrust

Eco Catalog

†Ratings based on results of the 2015 ConsumerLab.com Vitamin and Supplement Users Survey. More information at www.consumerlab.com/survey2015.

Notice: The products and information found on www.swansonvitamins.com are not intended to replace professional medical advice or treatment. These statements have not been evaluated by the Food and Drug Administration. Our dietary supplements are not intended to diagnose, treat, cure or prevent any disease or medical condition. Individual results may vary. SwansonVitamins.com urges you to seek the advice of a qualified professional for any health concern lasting more than two weeks, and to share with your provider any information pertaining to your health and well-being, including the use of supplemental nutrition. Read complete terms of service.

© 2015 Swanson Health Products

close popup
No Thanks

Your 10% Off Promo Code is on the Way! Thanks for signing up for emails.

You're now signed up to receive exclusive deals and savings opportunities!

Thanks again for connecting with us. Keep an eye on your inbox — your first coupon is on its way!

Thank You! This email address is already signed up

You are signed up for the following:

  • Offers
  • Recipes
  • E-Newsletter
  • Updates & Reminders

Thank you for your interest and be assured that you will continue to receive our emails at this address.

Look for your next communication from us within the next week.


We are having trouble processing your request.

Our apologies!

Please try again later.