The opinions are mixed about this subject. Researchers say people on a vegan diet have a high risk of broken bones, particularly hip fractures. They said a lower body mass index as well as a lack of calcium and protein can be factors. The findings gathered consistently support the hypothesis that vegans do have lower bone mineral density than their non-vegan counterparts. However, the evidence regarding calcium, Vitamin D and fracture incidence is inconclusive. But this happens when you are eating wrong vegan products. You have to eat special vegan supplements that keep your bone maintained. For example you can buy them from
https://buyeatvegan.com/vegan-sources-of-iodine/. I hope my advice is useful.