The general consensus is: yes. “The thinking in the field is ADHD is genetic,” Michael Manos, PhD, head of the Center for Pediatric Behavioral Health at Cleveland Clinic, tells Health. Lenard Adler, MD, director of NYU Langone’s adult ADHD program, agrees, adding that ADHD is a “highly heritable disorder.” Dr. Adler tells Health, “We think 80 percent of the transmission is familial.”