dr. kellyann petrucci. and america's healthy heart doc, dr. joel kahn.in grown american superfood can help you live a longer and healthier life. - with me today is dr. joel kahn. america's heart healthy cardiologist who literally wrote the book on healing from the inside out. welcome to the show, doctor kahn. - well thank you, dr. kellyann. i'm excited to be here. - so the research really is there. the link behind modern day diseases and the effect that fruit and vegetables has on them. - the single most important decision we make everyday is whether we're putting super junk or superfoods into our body. 80 to 90% of the patients i see are because of food choices. 80 to 90% is the lack of adequate fruit and vegetables in the diet. 80 to 90% of those diseases don't need to happen. - i mean, there's actually studies to back this up, right? - there is a study out of england that was over 60,000 people. those that were eating five to six to seven servings a day, they actually reduced their chance of dying, during the study period, by 36%. by packing in fruits