http://www.mayoclinic.com/health/obesity/DS00314/DSECTION=risk-factors
http://pediatrics.aappublications.org/content/113/1/152.abstract
http://www.nhlbi.nih.gov/health/health-topics/topics/obe/
http://www.heart.org/HEARTORG/
http://www.surgeongeneral.gov/library/calls/obesity/fact_whatcanyoudo.html
http://www.cdc.gov/obesity/index.html
http://circ.ahajournals.org/content/111/15/e257.full
http://win.niddk.nih.gov/publications/health_risks.htm