“Researchers at Hebrew University have found that extracts from the cannabis plant can help strengthen human bones, preventing osteoporosis, according to an Israel21c report.”
http://www.israelnationalnews.com/News/News.aspx/96146#.VPH1lE33-ix
“Peripheral cannabinoid receptor, CB2, regulates bone mass… These results demonstrate that the endocannabinoid system is essential for the maintenance of normal bone mass by osteoblastic and osteoclastic CB2 signaling. Hence, CB2 offers a molecular target for the diagnosis and treatment of osteoporosis, the most prevalent degenerative disease in developed countries.” http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1334629/