It was 1996, and Masashi Yanagisawa was on the brink of his next discovery. The Japanese scientist had arrived at the University of Texas Southwestern 5 years earlier, setting up his own lab at age 31 ...

Narcolepsy disrupts nighttime sleep and causes attacks of sleepiness, and sometimes muscle weakness, during the day. With a condition that can interfere with your life in so many ways, you’ll want to ...