@nycmusic Hi NYC! I really have no idea about the strontium as I am so new to this topic. But there is someone on here named Kathleen and she is a world of knowledge. I can tell she's done a ton of research and it rings true for me. From interactions with her and from my own research, I am trying the Bone Builder Pack from AlgaeCal because I'd prefer to reverse this by natural means, not pharmaceuticals. Of course, I can't just rely on supplements. I've changed my diet yet again and will soon be going to PT to build my muscles, which also support bones. The AlgaeCal has plant-based calcium, which supposedly goes to the bones instead of your arteries, and trace amounts of strontium. The pack includes more strontium. I know this wasn't very helpful, but it's as far as I've gotten in this unwanted journey! Good luck to you! I'm sure we will all figure out what is best for us. Happy New Year!

@nycmusic I called the company that makes AlgaeCal and they confirmed that their regular calcium supplements contain trace amounts of it, since it's a naturally occurring element in algae.

We ingest small amounts of strontium every day through out diet, because it's found in small amounts in various foods, particularly in seafood, whole milk, wheat bran, root vegetables, and leafy greens. However, the levels are generally low. This website contains a lot of information on this.
https://biologyinsights.com/what-foods-are-high-in-strontium/