According to fryar et al. (2012), there has been a of childhood obesity rates in the u. s. since 2005–2006.

There has been a sharp increase of childhood obesity rates in the u.s. since 2005–2006.
This situation is directly correlated due to the increase in junk food chains in united states and the development of technology that make children prefer to spend their time in front of their gadget rather than have to do physical activities that burn calories.