After reading these posts, I watched Doug Lucas's interview with a doctor who was against using strontium. I don't recall his name. He said that there was NOT ONE STUDY on strontium. I don't recall exactly which aspect of strontium he was speaking about, but for a while I have been seeking out NIH studies on strontium. Here are a few:
https://pmc.ncbi.nlm.nih.gov/articles/PMC8235140/
https://pubmed.ncbi.nlm.nih.gov/38612883/
https://pmc.ncbi.nlm.nih.gov/articles/PMC3265100/
If you just do a command-F (on a Mac computer) and put in strontium citrate, you'll see exactly where it's mentioned in these studies.

I myself am probably not going to take it because I don't want to burden my kidneys. Also, I have a hard time taking it on an empty stomach, because I tend to eat often, and I'm pretty sure my stomach isn't empty even when I wait two hours after eating. I was taking it in the middle of the night when I get up to go to the restroom, but at that time, I don't want to drink a lot of water, which would make it even harder on my kidneys. If I took strontium, I would want to drink a lot of water to help my kidneys flush it through.

In any case, another comment on the interview: I thought from the time he began speaking that that doctor was radically against supplements. I can understand that point of view. If you listen to the CEO of consumer labs, he says he would never take any supplements, using the analogy of having worked in a cafeteria in his school days. After doing that, he would never eat there again. He's managed lots of third party testing of supplements, and he thinks they're adulterated with all kinds of who knows what.

Additionally, in the interview, it seemed like Lucas and the doc were getting ranelate and citrate forms of strontium mixed up and then speaking about one or both as if they were the same.

I've seen many of Lucas's youtubes, and it seems to me that he acts as a funnel for information that he gets from experts. I would rather go back to other sources higher up on the food chain to get information. I like Margaret Martin's interviews. I think she had one with Clinton Rubin about vibration plates, which I found very helpful. She is very discerning. Also Dr. Susan Ott is a great expert on Osteoporosis. She has several animations of what the osteoporosis meds do to bone over time. Though I do not agree with everything she says.

Back to supplements. I had brain fog after COVID, which frightened me. I took NAC because I found out from a Yale research article that it helps brain fog. After a day or two of taking it, the fog was gone! (My brain is far from perfect, but it was restored to its condition before COVID.)

Pub Med/NIH studies can be difficult to understand, but they are worth reading, have good charts, and you don't have to read the entire study to get some value out of them.

Hope this is at all helpful.