New Delhi, Jan 5 (ANI): A new research has suggested that smoking disrupts the circadian clock function in both the lungs and the brain, thereby ruining productive sleep, leading to cognitive dysfunction, mood disorders, depression and anxiety. "This study has found a common pathway whereby cigarette smoke impacts both pulmonary and neurophysiological function. Further, the results suggest the possible therapeutic value of targeting this pathway with compounds that could improve both lung and brain functions in smokers," Irfan Rahman, from the University of Rochester Medical Center in Rochester, N.Y, said.