Greetings all!
I was recently diagnosed with severe Vitamin D deficiency. My level was 16 and should be between 30-80. I found this interesting as I am also a master gardener and am out in the sun (minus sunscreen) every day. I go outside for periods of 20-30 minutes at a time. I repeat this cycle throughout the day during Spring, Summer and Fall. I try to refrain from showering every day, except for those days where I do a lot of “dirty work” out in the yard, as I know your skin needs the oil to assimilate D. My Doctor immediately put me on RX Vitamin D, 50,000I.U. I take it once a week for 3 months. After 2 months, which is next week, he wants my levels rechecked.
Here is my question. After doing quite a bit of research on D, I have found that RX D is D2. D3 (human based) is naturally more easily assimilated while D2(plant/synthetic) is not. D2 should be toxic taken at the higher dosage, like me, but it is not. Why? The body can’t assimilate it. Case study after study has shown that Vitamin D2 (RX D) will elevate your level of D, but only in the short term. These studies have also shown that Vitamin D3 therapy will not only elevate your level but will sustain it in the long term. D2 is not very bioavailable, meaning short duration and poor stability. The GI tract is incapable of absorbing and the kidney’s can’t convert D to its active form. (D is fat soluble) Unlike D2, D3 is readily absorbed. In Vitamin D deficiency, the parathyroid becomes overactive, altering calcium metabolism. When replenished, it goes back to normal levels. This is not the case with Vitamin D2. In the Journal of Endocrinologist and Metabolism, they also show the same results in a recent study of D2 and D3. They state D2 and D3 are not one in the same. So, back to my question. Why are Doctors prescribing D2 for patients with Vitamin D deficiency? If D3 is readily absorbed and sustained, why would a Doctor prescribe the form of D that is not readily absorbed and sustained? I have no doubt it is the mighty pharmaceutical companies. So yogini’s, what are your thoughts or experiences with Vitamin D a/o Vitamin D deficiency?
When my Doctor phones me with the results of my lab work, I will discuss this with him. Fortunately, he is very open to alternative therapies. If my levels are well within the normal range, I will ask him about taking Vitamin D3 as a supplement at a higher dosage for maintenance of my levels. If my levels are still low, Biotech has D3 in 50,000I.U.'s, and I will ask him if I can try this instead.
Part of the overall problem here is there are few foods rich in vitamin D. This is especially problematic in Vegans and Vegetarians. Foods that are rich in D include, eggs (the yolk has 25 I.U), cod liver oil, liver and salmon. So you can see the difficulty in getting the recommended amount.
One final thought. Check your milk. Make sure it is Vitamin D3 enriched. Many are D2. Horizon Organic milk is D3 fortified. Silk and Almond Breeze are D2 fortified. And not only your milk, but all foods that are labeled D fortified.
I was honestly horrified at what I uncovered about all this. Thoughts?