Say it with us: not all nutrient forms are created equal. There are certain nutrients that might go by the same name and behave very similarly, but still have some key differences that can actually impact the way our bodies are able to use them. This often comes down to the way nutrients are sourced or synthesized.
Vitamin D is no exception. You might already know that Vitamin D is a fat-soluble vitamin that plays a part in a variety of functions in the body, including calcium absorption, bone health support, and immune function (1). Basically, our bodies need Vitamin D to support foundational health—but maintaining ideal Vitamin D levels can be a challenge.*
While we use Vitamin D as an umbrella term, there are actually two major types of Vitamin D that our bodies use: Vitamin D2 (also known as ergocalciferol), and Vitamin D3 (aka cholecalciferol). And knowing the differences between these different forms can shed some light on how to supplement with Vitamin D.(2)