Ive had high calcium issues cause of kidney issues,osteopenia showed up too,been on collagen for a yr now and been taking more d vit,i dont drink or smoke,i drink coffee and tea,what can i do or not do to stop cracking in my joints,usually my knee?

Crackling sound from the joints, especially the knees, is usually benign and less likely due to high calcium. However, your underlying conditions such as high calcium, kidney issue and osteopenia are of concerns. Furthermore, why do you take more vitamin D if your calcium is high. You need to be evaluated and followed by a nephrologist. Good luck.