Vitamin D2

Key regulator of the immune system

The most universally recommended supplement

For infant bone development and preeclampsia prevention

Breast milk is low in D3. Supplement mother or baby

Prevents accelerated bone loss in pre-menopause

Multiple meta-analyses associate optimal D3 levels with lower incidence of colorectal, breast and prostate cancer.

Optimal levels associated with higher implantation rate

Optimal levels associated with lower all-cause mortality and better immune function with age.

Deficiency causes fatigue

Functions as a prohormone

Very common deficiency in PCOS. Improves insulin sensitivity and fertility

Related to muscle function

Necessary for bone health

Immunomodulator. Deficiency associated with greater severity

Improves muscle function

Deficiency associated with higher body fat