Dr. Berg’s Healthy Keto and Intermittent Fasting Podcast

The Vitamin D DANGER They Ignored (For Profit)

10 snips
Feb 20, 2026
They unpack why vitamin D acts like a hormone rather than a typical nutrient and how skin makes most of it. They explore two distinct vitamin D systems and claim the cellular system needs much higher daily amounts. They challenge low-dose recommendations, question toxicity fears, and argue pharmaceutical incentives shape public misinformation. They contrast sun exposure, seasonal effects, and widespread deficiency risks.
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INSIGHT

Vitamin D Is A Hormone, Not A Typical Vitamin

  • Vitamin D is mostly produced in skin from sunlight and behaves like a hormone rather than a typical dietary vitamin.
  • Conventional
INSIGHT

Two Distinct Vitamin D Systems

  • Two vitamin D systems exist: a liver/kidney-dependent system for bone and an autocrine/paracrine system inside cells for many tissues.
  • The cellular system supports immunity, brain, muscles, and more and acts on a daily half-life.
ADVICE

Daily Higher D For Cellular Health

  • Maintain the autocrine/paracrine vitamin D system with roughly 8,000–10,000 IU of vitamin D3 daily according to Dr. Berg.
  • The bone-regulating system only needs about 600–800 IU every three weeks.
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