simon colby. >> thank you, my first time in new york. >> welcome. >> thank you. >> you bring with you great information about male pattern baldness. >> yes, we're trying to find natural solutions rather than drugs for these problems. >> let's go back to the beginning. a guy starts losing his hair. what is happening? >> you know, carol, this is a big question. all too often a patient will go to -- or will go to the doctors and they'll hand them a prescription. i think you have to look at the overall picture. there's different causes of hair loss. not just male pattern baldness, but nutrition deficiencies, hypo thyroidism, and that has to be investigated prior to just given a prescription for it. >> there are many reasons men lose their hair. >> absolutely. >> hor oen, last of zinc. you can be taking zinc and not absorbing it. >> you could have vitamin d deficiency. the hormonal system affects the hair. here's the least important of the body, so it will be the first to go. >> i always teach that when talking about raw food, too, because people always wonder why i push raw food. i say it