The invention regards the modulation of TGF-β activity by administering to a subject an antibody that binds to TGF-β, thereby increasing bone growth, bone formation, bone mass and bone strength. The antibody acts to increase osteoblast number and function while at the same time decreasing osteoclast number and function. Such drugs are useful in the treatment of diseases or disorders such as osteoporosis, Paget's disease, metastatic bone cancer, myeloma bone disease, bone fractures, etc.
