The consequence of poor nutrition

The consequences of poor nutrition are considerable.  

Surprisingly, some studies suggest that the majority of Americans are malnourished. Indeed, Americans (more than Canadians and Europeans) tend to be overweight and undernourished. 

Poor nutrition results in poor behavior, lower core strength, increased body fat, slower mental problem solving, less alertness, and slower muscle response time.

Info source: http://www.iaff.org/ET/JobAid/EAP/Poor_Nutrition.htm