https://www.aafp.org/pubs/afp/issues/2001/0301/p908.html
What You Should Know About Osteoporosis | AAFP
Osteoporosis is weak bones.
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https://webarchive.library.unt.edu/eot2008/20090508174100mp_/http:/www.healthfinder.gov/prevention/ViewTopic.aspx?topic=osteoporosis
Learn About Osteoporosis -Quick Guide to Healthy Living - healthfinder.gov
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