WASHINGTON - Young adults beginning treatment with antidepressants should be warned about an increased risk of suicidal thoughts and behavior, federal health officials said Wednesday. The Food and Drug Administration proposed labeling changes that would expand a warning now on the antidepressants. The current language applies only to children and adolescents. The expanded warning would apply to adults 18-24 during the first month or two of treatment with the drugs, the FDA said. The proposed labeling changes also would note that studies have not shown this increased risk in adults older than 24, and that adults 65 and older taking...