Why Taking Vitamin D Is So Essential to Your Health with JJ Virgin

15 Dec 2025 · 25 min
Episode

15 Dec 2025 · 25 min

0:00

JJ Virgin explains why vitamin D acts as a pro-hormone in your body, supporting bone health, immunity, mood, weight loss, heart function, and muscle strength. Most people are deficient due to low sun exposure, age, or medications. She recommends testing your 25-hydroxy vitamin D levels and taking D3 with vitamin K for optimal absorption.

Questions this episode answers

25‑hydroxy vitamin D test

50–80 ng/mL

Vitamin D3 (taken with vitamin K1 and K2)

About 2,000 IU/day in summer versus up to 10,000 IU/day in winter (example; test to guide dosing)

A study of 441 subjects (higher dose improved mood) and an 8‑week placebo trial in 78 adults over age 60 with moderate–severe depression

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