nature deficit disorder is an actual disease people get when they don't interact with nature. It is getting quite common because people aren't leaving their concrete lives.
The cure for N.D.D. or nature deficit disorder, is to take a walk through the forest or along the beach without listening to your iPod, texting, or browsing fbook, instead listen to the waves or smell that lovely tree scent.
A lot of children with nature deficit disorder are getting mental problems. Seriously just go to the nearest forest asap.