Tag: Vitamin d1

The term 'vitamin D1' is scientifically obsolete and not used today to describe a specific nutrient, but rather once referred to a mixture of calciferol compounds. The crucial benefits once associated with this term are actually attributed to the two main forms of the vitamin, D2 and D3.

Many people search for the sources of vitamin D1, unaware that this compound is a historical misnomer for a mixture of different vitamin D-related substances. The critical forms for human health are actually vitamin D2 and D3, obtained from sunlight, specific foods, and dietary supplements.

According to the World Health Organization, approximately one billion people worldwide are estimated to have a vitamin D deficiency. While the term 'vitamin D' is often used generically, it actually refers to a group of compounds, most notably D2 and D3, that are essential for human health.

According to the National Institutes of Health, a significant portion of the U.S. population has insufficient vitamin D levels. This raises questions for many, including how is vitamin D1 deficiency diagnosed, a query based on an obsolete term for a mixture of vitamin compounds.

An estimated 40% of U.S. adults are vitamin D deficient, which raises many questions about dietary intake. This often leads people to ask, "Which of these foods is a great source of vitamin D1?" The answer, however, is a bit more complex than it appears.