I agree. It concerns me that the study was conducted by the manufacturer of the product. The participants "were encouraged" to take calcium and D and to exercise regularly so we don't seem to have an idea as to whether they did either of those things. There could be vast differences in level of exercise, quality of diet and level of supplementation. I also wonder if any of the participants were on a bone drug as there doesn't seem to be any information on this. In the follow up analysis there was no placebo group. It wasn't a well designed study from what I can see. In looking at the Gelita website, the manufacturer of Fortibone, and maybe I missed this, I couldn't find any information on the source of their collagen other than that it could be from porcine, marine or bovine and I don't think they specify if their bovine collagen is from grass-fed sources. So their fish could be farmed and their porcine and bovine could be from conventional farms. I would not want to consume if from those sources. I could have missed further disclosure on their website so if anyone has more detailed info, it would be great to share. In the meantime, I'll stick with wild marine or grass-fed sources of collagen.