You can have osteoporosis and not know it, but many people notice symptoms such as pain and height loss. Read a brief description of osteoporosis symptoms.
Think of osteopenia as a midpoint between having healthy bones and having osteoporosis.
Juvenile osteoporosis most often happens in children between ages 8 and 14. It sometimes develops in younger children during growth spurts
Premenopausal osteoporosis (bone loss that happens before menopause), is not uncommon and can result in painful, debilitating fractures.