Perspective on Robin Williams' suicide; Warning signs of potential suicide; Comedians' personality traits; Gut bacteria can influence eating behavior; Pot damages teens' brains; Differences in risk-taking teens' brains.

Tips to control panic attacks; Being alone with one's thoughts intolerable; How to be more patient; One question identifies narcissists; Eating baked, broiled fish boosts brain health.Next week: Robin Williams.

Possible blood test to predict suicide risk, and another one for postpartum depression risk; Depression raises risk of dementia; Tips on flying phobia; Hospital killing exposes safety gap; Drinking and memory problems; Sleep deprivation distorts memories.

MD stops killings; Vet wants to keep pet ducks; Pets improve health; Stress enhances negative memories; Narcissism, empathy in social media; Insomnia after divorce raises blood pressure; Power of making amends; Low magnetic field stimulation for depression.

How gun violence by mentally ill could be curbed; Responses to Boston bombing further PTSD research; How stress causes weight gain; Brain implant to restore memory; Risk taking in bipolar disorder; Stress and insomnia; Interruptions degrade quality of work.

Involuntary outpatient treatment of mentally ill; Sedatives cause 90,000 ER trips a year; Brains of sex addicts, drug addicts similar; Hostility increases stroke risk; Moderate drinking and heart health; Quitting smoking with pill plus patch.

Fear of side effects worsens them; Overbooked kids don't function well; Gene found for one type of autism; Medications for autistic kids; ADHD kids and drug abuse.

Issues unique to women with depression, including increased heart attack risk; Insanity defense for Seattle shooter; Brain difference explains mob mentality; Brain scans to increase empathy.

Dr. Oz testifies to Senate about weight loss aids; Surgical implant for obesity; Suicide warnings on antidepressants raised suicide risks; MD's asked to judge competency to carry guns; Why smokers don't see rewards in quitting.

Brain changes result from fatherhood; Seattle shooter went off meds; Teen bullies, victims more armed; More military getting mental health treatment; Heart health keeps mind sharp; Tips for coping with anger.