The new studies, which currently (November 2009) appear online in the Journal of Autism and Developmental Disorders, probe the daily experiences of mothers of adolescent and adult children with autism over a period of eight successive days. On four of those days, the researchers measured levels of maternal cortisol, a hormone released by the adrenal gland in response to stress. Cortisol levels were found to be significantly lower than normal, a condition that occurs under chronic stress, yielding profiles similar to those of combat soldiers and others who experience constant psychological stress.

"This is the physiological residue of daily stress," says Marsha Mailick Seltzer, director of UW-Madison's Waisman Center, an authority on families of children with developmental disabilities, and the leader of an ongoing longitudinal study of families of individuals with autism. "The mothers of children with high levels of behavior problems have the most pronounced physiological profile of chronic stress, but the long-term effect on their physical health is not yet known.
Discuss   Bury

Backs Who Voted Related Links