seratonin is important for stable mental health. >> williams' widow confirmed he was struggling with anxiety and sobriety but was sober at the time of his death. also today, a memorial at the house used in williams' movie "mrs. doubtfire" continues to grow. fans have placed hundreds of flowers on the steps leading to the front door of the home on steiner street. the home's owner says he will allow the memorial to stay until saturday. >> two of robin williams' close friends and a medical expert will join cheryl jennings this saturday at 4:30 p.m. for a special edition of "beyond the headlines" focusing on depression and robin williams' fight against it. >>> in other news, a san jose police officer shot and killed a woman this morning after receiving a call she was armed and threatening to kill family members. happened at blossom hill road and playa del rey. david louie is on the scene. david? >> reporter: blossom hill road is closed. the detectives here are still working on their case. police are not releasing any details about the woman who was killed nor whether language might have

feeling love, compassion, joy, empathy, equnamity, your brain starts to make things like dopamine, seratoninoxitocin, opiates, endorph endorphins. these are antidepressants but they also are immuno modulators. if you are feeling anger, resistant, employment, depression, any of those, fear, then if you can you make makedrenaline but you make cortisol which weakens the immune system and has many other effects. so every moment, your genes influence what you are feeling, what you are thinking even the way you speak, how you look at your environment, your eating, your sleeping habits. this is a new science, which wasn't there even 10 years ago. >> right. the whole epi general itics field. to boil down what you said and make sure i understand it t you were an endocrinologist study different chemicals that influence our brains and immune systems and you start realizing at some point that if we can control these chemicals, we could actually create outcomes? >> that's a good way to say it. our body me between two states, one is inflammation. inflammation is a protective response. if you fall down, yo

experts say it can also trigger depression by affecting seratonin in the brain. >> it's important for stable mental health. and so many people, when that is lost, develop depression. >> parkin's disease makes that more challenging. >> in the statement williams wife says in part it's our hope in the wake of robin's tragic passing that others will find strength to seek the care and support they need to treat whatever battles they're facing. and late today, michael j fox tweeted stunned to learn robin had pd. pretty sure his support for our foundation predated his diagnosis. >> a memorial is growing at san francisco home featured in "mrs. doubtfire" fans placed flowers and notes on the steps. some signs feature famous lines from other movies the owner says he's going to let it stay until saturday. and a couple local comedians who are close friends of robin williams joined cheryl jennings for a special beyond the headlines on depression and the fight against it. >> still ahead, tears will flow. the bay area father relives a murder of his son. a moving new film on a championship football t

experts say it can also trigger depression by affecting seratonin in the brain. >> it's important for stable mental health. and so many people, when that is lost, develop depression. >> parkin's disease makes that more challenging. >> in the statement williams wife says in part it's our hope in the wake of robin's tragic passing that others will find strength to seek the care and support they need to treat whatever battles they're facing. and late today, michael j fox tweeted stunned to learn robin had pd. pretty sure his support for our foundation predated his diagnosis. >> a memorial is growing at san francisco home featured in "mrs. doubtfire" fans placed flowers and notes on the steps. some signs feature famous lines from other movies the owner says he's going to let it stay until saturday. and a couple local comedians who are close friends of robin williams joined cheryl jennings for a special beyond the headlines on depression and the fight against it. >> still ahead, tears will flow. the bay area father relives a murder of his son. a moving new film on a championship football t