Three ounces of wild sockeye salmon has 570 international units (IUs) of vitamin D—or about 70% of the recommended daily intake. While salmon is a great source of vitamin D, there are a few other ...
Nearly a quarter of Americans are estimated to have a vitamin D deficiency. Why is that? A 2022 study of National Health and Nutrition Examination Surveys (NHANES) data estimated that about 22% of ...