One of the many downsides of being hypothyroid is the inability to absorb and/or metabolize a variety of vitamins and minerals, mostly due to low stomach acid.
And unfortunately, many Vit D challenged patients think that all they have to do is sit in the sun and they will create enough Vitamin D. Not so for many hypothyroid patients! I was fortunate to have a decent doctor who tested my Vitamin D level when knowledge about vitamin D deficiency was in its infancy. My level was 19 with a normal range of 30 – 100 ng/ml and he put me on high doses of Vitamin D3. Imagine my surprise when six months later, I didn’t need my daily asthma inhaler and I didn’t have a cold all year!