Obesity predisposes us to

Reduced quality of life

Asthma (in overweight children)

Psychosocial problems

Higher overall mortality

Premature death from lifestyle-related, chronic non-communicable diseases (e.g., CVD, diabetes, etc)

AHA Scientific Statement Population-based Prevention of Obesity. Circulation. 2008;118:428-464. http://circ.ahajournals.org/cgi/content/short/118/4/428

WHO Forum and Technical Meeting on Population-based Prevention Strategies for Childhood Obesity.  http://www.who.int/dietphysicalactivity/childhood/report/en/index.html