Similarly, a small 2012 study of 61 children and adolescents with inflammatory bowel disease found that supplementation of 2, 000 IU of vitamin D3 daily or 50, 000 IU of D2 weekly, for 6 weeks, more effectively corrected vitamin D deficiency than 2, 000 IU daily of vitamin D2 without any changes to parathyroid hormone suppression.
A single 3ounce serving of cooked salmon provides a teen with nearly 100 percent of her required dietary intake of vitamin D for the day. Dairy products like milk, soy milk and yogurt are also good sources of vitamin D, but only if they have been enriched with the nutrient; they do not otherwise contain vitamin D.
Dr. Humble and colleagues assessed 117 mental health outpatients of all ages and found that teenagers had the lowest levels. Teenage females had vitamin D levels of around 20 ngml and, in another nod to video games, teenage Swedish males attending a mental health clinic had average vitamin D level of around 10 ngml.
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