david samadi, department of urology. >> and dr. marc siegel, nyu lang the medical center and author of the inner pulse, unlock the secret code of sickness and healthy. good morning. >> good morning. >> that's what we do here, unlock it. get you going for the week. >> we start with a incredible study this week. when you go to the doctor, you want to have all sorts of tests and bring it on, whatever they have. but this study says the common tests and treatments we get may not be necessary. this surprising. >> it is and it's not. it's a continuation of what we talked about a year ago. under the auspices of internal medicine foundation, they decided is 135 tests and procedures may not be necessary. the list is long, no antibiotic for sinusitis. no c-section before 39 weeks. it goes on. no body scan because of radiation. we don't need to get into the tests. of course what we're learning is the whole concept of choose wisely is more is not better. i know marc will talk about how the healthcare system in this country, we're spending more,

. >> jamie: andled is david samadi. chief of robots at mount sinai malmedical center. great to have you here. er where i go people talk about this segment. there is new hope for those that are visually impaired. the fda approved a brand-new item? >> right now we are use foorg a condition called retinitis pigmentosa where the lighted cells in their eyes in the retina are not working. it's congenital. you get it when you are born. sites have been -- scientists have been trying to figure a way around it but they are icing camera technology. they are using the camera. department of energy has been involved in this since 2002. it's called argus. they have gone through three prototypes and argus one, two and three and they put a video camera on a pair of glasses. video camera sends impulses to a computer chip that sends these impulses on to the eye where electrodes are implanted on the retina. this is the hard part. the electrodes converted into signals that the brain understands. that has required all the research. how does the eye do that. how does the eye converts them. t

david samadi, the vice chairman of the department of the neurology and the chief of robotics at mount sigh near. >> eric: and dr. marc siegel who is the author of the inner pulse, unlocking the secret code of sickness and health. doctors, good morning. >> good morning. >> as always. >> eric: we'll first start with a brand new warning for men. listen up. a new study says that those who have a high intake of calcium supplements could have a greater risk of cardiovascular death. dr. samadi, what does that mean if you take calcium. it affects your heart? >> yes. this is actually a study that came out of jam ma thia this we. they looked at over 300,000 participants and patients over 12 years. they're finding out th finding t calcium increases the risk of cardiovascular death and disease in men. now, it could be very confusing for a lot of people that are watching because for years, we said take your calcium, it's good for prevention of osteoporosis, great for bone health. it's even great for diabetes or high blood pressure, and now we're saying wait a second, don't take too much. > >> eric

. >> jamie: andled is david samadi. chief of robots at mount sinai malmedical center. great to have you here. er where i go people talk about this segment. there is new hope for those that are visually impaired. the fda approved a brand-new item? >> right now we are use foorg a condition called retinitis pigmentosa where the lighted cells in their eyes in the retina are not working. it's congenital. you get it when you are born. sites have been -- scientists have been trying to figur

here to way is david samadi is member of the fox news "a" team and doctor, we should point out you areperts when it comes to prostate cancer and understanding how men can avoid it and prevent it and how to treat it. so what about this new study? >> it's a study that is coming from new england jumper of medicine. they looked over 3,000 patients and followed them for 15 years. what they are find ougtd there are some side effects with surgical treatment and radiation. most of these studies come from early mid '90s and we were doing a lot of open surgeries and radiation was not as sophisticated. we did all intense modular radiation they were. you have to take it with a grain of salt. i can tell you the answer to that question, there are certain times that treatment for prostate cancer we are overtreating it. there is overtreatment of prostate cancer is we don't have a real diagnostic tools. meaning that you may have many different types of prostate cancer, high risk, moderate risk or may have low risk. moderate risk and high risk you have to treat it because otherwise they will tie die. yo

david samadi of the medical a team.el any of these, get help starting with severe head pain, the worst headache of your life. >> this is very serious. a lot of people may have a migraine headache and it goes away. but if you have a throbbing headache like a belt around your head, you've got to see somebody. we were talking about a case where someone in my family ended up getting an m.r.i. and they found a tumor in the head. there is no room in the brain. it could be an aneurysm or a mass. don't dismiss that. severe headache that doesn't go away, go to the emergency room and make sure they investigate it. >>gretchen: what about a throbbing tooth? people say it is a little uncomfortable, i'll let it go for awhile. >> see your doctor. everything starts with the teeth being very sensitive when you drink something hot or cold. that's probably a crack in the enamel. then bacteria can get in and you can form an abscess. that is a big deal. by seeing a doctor early on you can save your tooth. and make sure you go in and not dis

david samadi is here to explain how lack of sleep is destroying america's health.or eight but even a little less is okay. >> i think ideally, six to seven hours is what you need. the importance of this is because you really need to get into the deep sleep or the rem sleep. that is when basically all the things you don't do during the day while you are sleeping body is going to repair and all the inflammation. so six to seven hours of sleep is ideal and try to get it. if you are getting up every two hours, that doesn't count. >> eric: so if you are like us us, you get five hours and you are at risk. >> big news is cardiovascular disease and a lot of studies are showing that if you get less than six hours of sleep you are at risk double. there is still reactive protein which is inflammation. it's heart disease and stroke is up. this is really important. over the years we've talked about diet. we've talked about exercise. eating healthy stuff. sleep is very important in preventing heart disease. >> eric: diabetes? >> if you have diabetes and not getting enough sleep,