below 50 for 25-hydroxyvitamin D
salmon,shrimp,cod,eggs.
The term "vitamin D" refers to several different forms of this vitamin. ergocalciferol (vitamin D2) and cholecalciferol (vitamin D3). Vitamin D2 synthesized by plants. Vitamin D3 is synthesized by...
Drugs and disease free.
D & D, in the context of dating, means drug and disease. It's commonly used to say 'Drug and Disease free", or "D & D free".