smokers

Lung cancer patients with a history of smoking have ten times more genetic mutations in their tumors than those with the disease who have never smoked, according to Richard K. Wilson, PhD, and his colleagues at Washington University School of Medicine in St. Louis.

Researchers at Washington University and King’s College London have independently identified DNA on chromosome 3 that appears to be related to depression. The new studies identify a DNA region containing up to 90 genes. Both are published May 16 in the American Journal of Psychiatry.