A widely acclaimed expert on cancer biology, circadian rhythm and the health implications of nighttime exposure to light has joined the Tulane University School of Medicine. Dr. David Blask is a professor of practice in the Department of Structural and Cellular Biology.

In the early 1980s, Blask was one of only a handful of scientists studying how the pineal gland regulates breast cancer development and growth through melatonin, a hormone produced by the gland at night during sleep. Melatonin modulates many of the body’s natural circadian rhythms, including the sleep/wake cycle, and has been shown to have important anti-cancer properties.