The Portland Japanese Garden is a little oasis right outside the city.
We read it everywhere. "Getting outside to soak up vitamin D!" The truth? You don't "soak up" vitamin D.
The implication here is that we intake vitamin D as molecules flying down to earth via the rays of the sun and entering our bodies through our skin. But that's not actually how it works.
Rather, our bodies use energy from specific wavelengths of light (in the UVB spectrum) to convert naturally occurring cholesterols in your skin to previtamin D3. After a series of reactions, previtamin D is converted to vitamin D3 which can be stored in the skin for up to a week. The body then uses the Vitamin D Binding Protein to transport the vitamin D3 around the bloodstream to almost every cell in your body. ☀️