Even though this is great book, it is a hard book to read. I still have not read the book from cover to cover. However saying that the information it contains about Melanin, is very interesting. We all have Melanin, some more than others. If you are studying the human body this book is idea. For me the reason why i brought it was that i wanted to know more about my Melanin skin and how it works and enhances my entire body. I am of caribbean parentage and it has opened my eyes to information that i would never have known or been told about my skin, my Melanin.