Moreover, bone meal is also sold as a human nutritional supplement, but curiously under disguised names, e.g. "Calcium Hydroxyapatite" (while bone meal does indeed contain hydroxyapatite, it also contains other minerals and a large amount of proteins), presumably in order to not scare the vegans, who are the main people who need such a nutritional supplement.

While I eat almost only vegan food, I make an exception and I add to some of my food small quantities of such bone meal. However, unlike most people, I read very carefully the small print, so I am aware that this supplement is in fact made from cattle bones, even if its label does not suggest this.