@johnbishop I am also taking D3 50,000 units every two weeks. I started it years ago because my parathyroid (PTH) was high and Vit D very low. As my Vit D was increasing to normal levels, so was my PTH coming back down to normal.

Several years ago I attended a seminar on Vit D. A interesting fact I learned was Vit D is best absorbed from the sun through our abdomen when exposed while outdoors. You are right there is more than just bone health. I am put on Vit D by my Endo Doc. to correct my imbalance and always be on it.

P.S. How is the view out your back window? I hope better than mine—lots of heat and no rain. Everything is dying and has turned brown. Not worth taking a picture of to share. Hope all is well with you. KLH