Man-made Vitamin D may Build Bones

http://story.news.yahoo.com/news?tmpl=story2&cid=97&ncid=97&e=12&u=/hsn/20020930/hl_hsn/man_made_form_of_vitamin_d_may_build_bones

osteomalacia gets a mention as well. if man-made vitamin D and natural vitamin D produce different results… is the man-made stuff actually vitamin D? what changed?? what is the impact on the body’s other systems when we externally stimulate a specific reaction in a desired trait (e.g., bone [re]generation)?