Getting Enough Vitamin D?


One of our family friends has been having problems with stress fractures from her running.  "But I take lots of calcium," she told me. 

Calcium is great, but what about Vitamin D?  Vitamin D is critical so your bones can take up and use the calcium you’re taking. Also, from a recent study, it seems to help prevent several different types of cancer, and is being recommended for patients with multiple sclerosis.

Many of us who are mostly indoors and who use sunscreen, don’t get enough. Find out if you have enough with a simple blood test. Ask your doctor to add a 25-OH vitamin D test at your next appointment.

Or, you can do a test at home called the ZRT Vit D Blood Spot Test (look on the web to order). We tested it against our hospital lab and the 3 readings were very close to the hospital lab’s results.

If you are deficient, take Vitamin D3 2,000-3,000 units daily for 3 months and have it rechecked. If your level is normal, for maintenance, you need between 400 and 1,000 IU daily of vitamin D3 (cholecalciferol), depending on your age and level of nutrition. Vitamin D3 is also in milk – 4 glasses will give you most of what you need if you’re not deficient already.

See Dr. Irwin’s new articles on Tips on Laser Photorejuvenation and Skin Imaging in our new Consumer Focus category.

Dr. Brandith Irwin, MD

Ask me your skincare question!

Hi, I’m Dr. Irwin, and I believe that consumers need and deserve a medically trained and unbiased skincare advocate.

  • All our content is written and researched by myself and my trained staff.
  • My medical office in Seattle has experience treating thousands of patients.
  • This site is not affiliated or financially tied to any product line.
Ask Me Something
SkinTour Skincare
One of the best investments in your skin is your daily skincare. Why? Because you can prevent many problems with blotchy skin color, lack of glow, texture, some types of acne, and fine lines with good skincare products. You can also correct some of these problems with effective skincare products. Great skincare is often more expensive because quality ingredients are expensive. Some companies spend on research/development which benefits all of us and adds to the cost. Are they worth it? In general - yes!