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How the Vitamin D Receptor Gene Affects Calcium Absorption
Still taking calcium and vitamin D for stronger bones?
You might want to think again. Research published in the British Medical Journal found that calcium and vitamin D supplements can actually increase cardiovascular risk, depositing calcium in your arteries instead of your bones.
In this eye-opening video, Dr. J Dunn explains how your genes determine whether calcium strengthens your skeleton or hardens your arteries, and what you can do to fix it naturally.
What You'll Discover
- Why the VDR (Vitamin D Receptor) gene controls mineral absorption
- How a closed receptor makes vitamin D supplements useless
- Why calcium ends up in arteries, joints, and kidneys instead of bones
- The role of K-2 as your body's “mineral traffic director”
- Why bisphosphonates make bones look thicker but actually weaker
- How progesterone builds bone better than calcium supplements
The Genetic Connection
If you have a Vitamin D Receptor gene variant, your receptor stays closed, blocking vitamin D from doing its essential job of enabling calcium absorption. Dr. J had this exact problem. Her vitamin D levels stayed dangerously low despite supplementation until she discovered the co-factors (K-2 and vitamin A) that finally opened her receptors.
The Calcium Myth
Calcium is everywhere in food: green leafy vegetables, meat, eggs, dairy. Most people get plenty. The problem isn't intake, it’s whether your body knows where to put it. Without the right co-factors, you're creating arterial plaque instead of building bone.
The Bisphosphonate Problem
These popular osteoporosis drugs kill off osteoclasts, the cells that break down old, diseased bone.
Result? Bones look thicker on DEXA scans but are actually more brittle. Many people on long-term bisphosphonates experience sudden fractures just from walking.
Why Personalized Genetics Matter
Taking K-2 and vitamin A without understanding your downstream genetics (MAO, COMT genes) could trigger unexpected side effects like anxiety and irritability.
This is why one-size-fits-all supplementation fails.
Perfect for you if
- You're taking calcium supplements for bone health
- Your vitamin D levels stay low despite supplementation
- You're concerned about osteoporosis or osteopenia
- You're on or considering bisphosphonates
- You want to understand the real science behind bone health
- You're interested in personalized, genetics-based solutions
Stop guessing with your bone health. Understand what your body actually needs based on your unique genetics.

