Total Health & Wellness Total Health & Wellness
Total Health & Wellness

Customized for Your Needs

World Class Products

Weight Management


Vitamin D Insufficiency Widespread Even in Sunny Climates

At a Glance: Living in a sunny climate does not guarantee you are getting enough vitamin D. Vitamin D deficiency occurs across all ethnic groups, all geographic locations, and impacts all ages.

A study published in the American Journal of Clinical Nutrition determined and analyzed blood vitamin D levels in a group of residents of southern Arizona (statistically representative of the larger population).

Participants were categorized into 4 groups on the basis of serum vitamin D concentrations: <10.0 ng/mL, 10.0 to 19.9 ng/mL, 20.0 to 29.9 ng/mL, and 30.0 ng/mL and over. A level of 30 ng/ml is considered a minimum healthy level, and more optimal levels are at 50 ng/ml or more.

Vitamin D is an important fat soluble vitamin that serves several important functions in the body. Unfortunately, inadequate intake leading to an insufficiency or deficiency for this fat-soluble vitamin is quite common. Vitamin D deficiencies occur in all ethnic groups, in all geographic locations and impact all ages—a major concern given the importance of vitamin D in supporting health.

The average vitamin D concentration for the total population was 26 ng/mL. Of 637 participants, 22.3% had vitamin D concentrations <30 ng/mL, 25.4% had concentrations <20 ng/mL, and 2.0% had concentrations <10 ng/mL. Blacks (55.5%) and Hispanics (37.6%) were more likely to have deficient vitamin D concentrations (<20 ng/mL) than were non-Hispanic whites (22.7%). Exposure to sunlight had a greater effect on vitamin D levels in whites than in blacks and Hispanics.

Adult residents of southern Arizona are commonly deficient in vitamin D despite living in an area with chronic sun exposure. And adults with darker skin were particularly at risk for vitamin D insufficiency in this study.

American Journal of Clinical Nutrition, Vol. 87, No. 3, 608-613, March 2008.

Optimal nutrition means a complete spectrum of vitamins, minerals, antioxidants, and special phytonutrients. CellSentials from USANA delivers this in pure, effective ingredients and formulations designed for optimal nourishment, enhanced protection, and innovative cellular renewal. Discover why CellSentials is above and beyond your average multivitamin.

Please contact us if you wish to try the USANA products