david samati, chief of robotics surgery, great to have you here. >> hello. >> good to be here. >> good to see you guys. >> we start with something that affects so many americans, eating disorders such as anorexia and other conditions. this happens to be national eating disorders week and it raises awareness about these conditions that impact 24 million americans and affects people of all ages and genders. doctor siegel, how serious is it? >> eric this is a huge problem and there's a national eating disorders website, nationaleatingdisorders.org, we're talking 20 million young women, mostly young teenagers, 10 million men, not just women, men as well, this is a very, very serious problem in this country, it runs in families, it's related to body image, self-ima self-image, a lot of underlying depression involved. let me give you an idea what it is. anorexia nervosa the person can't get thin enough no matter what they do, starvation, binge eating, purnging with laxatives and diuretics. bulimia nervosa is binge eating followed by purging but they can be normal weight, they don't have to h

david samati, chief of robotics surgery, great to have you here. >> hello. >> good to be here. >> goodys. >> we start with something that affects so many americans, eating disorders such as anorexia and other conditions. this happens to be national eating disorders week a

david samati, a member of the fox news medical a-team looking trim and fit as always. >> how many people are going to believe jamie for getting all your habits. do you think she is going to let it go on weekends? >> i'm going to ask you because this is a real study. this is for real, folks. >> scientifically this is a stu study. what they are looking at is the secret to losing weight is to really run a tight ship during the week. >> how tight? >> make sure you do it very slowly. think about losing weight as a real journey, as a race that every day, the ones that did really well started off really well on monday. think of it as a nascar race. the flag goes down on monday morning. you just want to have a great start. go slow on tuesday and wednesday. when is the lowest weight? friday night. when is the highest weight? sunday evening. that that's the worst. during the week you have a schedule. everyone is on a tight schedule. during the weekends you let the guards down. you are going to gain the weight back. >> unless you're us and your weekend is a week day. i was looking at the cameras if