According to a study in the Archives of General Psychiatry (http://tinyurl.com/lead-and-psychiatry), in young adults with low levels of lead exposure, higher blood lead levels were associated with increased odds of major depression and panic disorders. Exposure to lead at levels generally considered safe could result in adverse mental health outcomes. The mean blood lead level was 1.61 µg/dL. Increasing blood lead levels were associated with higher odds of major depression and panic disorder but not generalized anxiety disorder. Persons with blood lead levels in the highest quintile had 2.3 times the odds of major depressive disorder and 4.9 times the odds of panic disorder as those in the lowest quintile. Cigarette smoking was associated with higher blood lead levels and outcome, but models that excluded current smokers also resulted in significantly increased odds of major depression and panic disorder with higher blood lead quintiles.