. >> and chairman and professor of urology at lenox hill hospital and chief of robotic surgery. good to see you both. >> good to see you, as always. >> you picked a nice color for today. >> thank you. i tried. my mom is happy about that. this is fascinating p. we are talking about bionic limbs no long

. >> and chairman and professor of urology at lenox hill hospital and chief of robotic surgery. good to see you both. >> good to see you, as always. >> you picked a nice color for today. >> thank you. i tried. my mom is happy about that. this is fascinating p. we are talking about bionic limbs no longer unique. doctors per forming the world's first bionic hand on three austrian patient who are not labelled to could just about everything. so how common place will these limbs become and how reliable is the technology. dr. siegel, we will start with you. is the future now? >> the future is now. 1.7 million people in the united states missing at least one limb. for those people out there, this is an amazing day. the department of defense has been working on research for these kinds of artificial limbs for seven or eight years now. they got approval for deka. like luke from the star wars trilogy. it is a mind-driven limb. in other words, your mind drives your upper arm to then fire the prosthetic limb. >> what's new about that is -- >> connected to nerves? >> exactly. nerves in the u

chair of urology at lenox hill hospital joins us. pregnant women take folic acid.have shown that's good for them. what about this study here that it reduces risks? is this a good study medically speaking? >> we like this study because for many reasons. one is the fact that they have about 20,000 participants which is great for this particular study. they followed it for five years. what they did was they divided the two groups into 10000 people, took folic acid and ace inhibiter. the only factor was one group got the folic acid and the other didn't. they followed them for five years. the group that took vitamin b had 21% lower chance of first-time stroke, which is significant. should everybody out there who has high blood pressure go out and start taking vitamin b or folic acid? no. talk to your doctor. all the vegetables that you see on the screen you can get a lot of vitamin b from. from nuts veggies. have a balanced diet is important. if you are at high risk, high blood pressure, high risk for stroke, cut salt out of your diet, the first thing, and talk to your