well, that's the case michael paulen makes in his new book, it's called "cook."back on the show. >> sure. >> it's a great book. i've tried to cook more food more recently myself just because i enjoy the process. i have small children and find it very communal and a great social thing for families. >> for sure. >> you've written a lot of books, why did you decide to write this? >> you know, what matters most is not really the nutrients, good or bad, and it's important that scientists know about that and work on that, but for the average person the key fact about your diet is who is cooking it. is it a human being, preferably yourself or a loved one? or is it a corporation? when corporations are cooking your food, that's when we get into trouble because they cook really badly. >> if you go to big restaurants they may not be using as high quality food but you also wrote in the book they tend to sort of bury it with salt and sugar and things like that. >> well, their business model involves getding -- especially talking fast food mostly and processed foods you find,