Why You Still Feel Terrible With 'Normal' Vitamin D Levels (7 Doctors Missed This)

Why You Still Feel Terrible With 'Normal' Vitamin D Levels (7 Doctors Missed This)

Hillary Lin, MD

By 

Hillary Lin, MD

Published 

June 9, 2025

Are you exhausted despite "normal" vitamin D levels? You're not alone. After treating thousands of patients at Stanford and in my longevity practice, I discovered why standard vitamin D testing is fundamentally flawed.

In this video, I reveal:

  • Why your "normal" vitamin D test (30-31 ng/mL) might be keeping you sick
  • The 5 forms of vitamin D your doctor isn't testing (and the one that matters most)
  • Why 99% of your vitamin D is trapped and unusable by your cells
  • The missing mineral that makes vitamin D supplements ineffective
  • The exact morning protocol that transformed my patient Rachel's life after 7 doctors failed her

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