September 15 is World Sleep Day. Doctors have cautioned against apathy to seemingly trivial sleep problems saying a third of humans exhibit one or the other form of 80 types of disorders some potentially fatal. But the good news is: Cure is equally at hand. ‘How you sleep decides how healthy you are. It's a non-negotiable part of life. Do not take the problem lightly’ warned top neurologist Dr. Sanjay Manchanda chair of Sir Gangaram Hospital's Department of Sleep Medicine in New Delhi. ‘Sleep disorder contributes to a host of other issues: Reduced quality of life loss of memory nervousness