At 62 I was diagnosed with invasive breast cancer. I had osteoperosis and was already taking Prolia. The chemo and radiation and Letrozol are all hard on your bones. I began taking Bone-Up, a Bovine Calcium instead of the Caltrate I had been taking. My Dexascan after all the treatments was -4 in most areas. Two years later, after taking the recommended does of Bone-Up and Collagen Peptides I am back to osteopoenia in most areas. I discovered that the Caltrate comes from stone and builds up in your arteries, but the Bone-Up Calcium does not. I eat dark chocolate, lots of different nuts and avocado and use olive oil instead of butter when possible. I paid to have a heart calcification Cat Scan in 2019. My % was 46% which was average for my age. I recently had another heart calcification test ($110 out of pocket and so worth it!) and my % was 1%. I think the Bone-Up helped with that as well.