@bethieb I also want to drop my collagen peptides, but reading has convinced me to continue to ponder at least for now. Doctors are often out of date on the latest research because they have so many thing that they need to know.

Below is a meta-analysis research paper from less than a year ago.
https://pmc.ncbi.nlm.nih.gov/articles/PMC12488437/
EXCERPT: "This meta-analysis shows that collagen peptide supplementation, especially when combined with calcium and vitamin D, significantly enhances bone mineral density and could make a contribution to preventing fracture in populations at risk, such as postmenopausal women. The impacts are greatest at the spine and femoral neck, with moderate to large standardized mean differences in studies. Supplementation with collagen also shows consistent effects on bone turnover markers ... "

And here is a university health site reference:
https://www.uclahealth.org/news/article/collagen-peptides-may-be-beneficial-menopausal-bone-loss
EXCERPT: " ... Researchers found that a year of daily collagen peptides supplementation measurably increased bone mineral density in the lumbar spine and in the upper femur. The women also had higher levels of a blood biomarker that indicates bone formation. In a follow-up study four years later, the researchers reported continued benefits. It’s important to note that only a few small studies have been completed thus far, and that more research is needed for a definitive outcome... "

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My take is that because a drug company cannot profit from a patent there is not enough money for a nice big expensive RCT trial. I don't consider the collagen peptides to be a cornerstone of my actions against OP (LIFTMOR type exercise and HRT are my key responses), so not sure what I will do when I next run out of collagen peptides, which I am now taking at half dose.