This tells the very interesting story of how the author went from developing drugs to developing "the ideal fast food" which would be full of nutrients, as a way to strengthen the immune system. He describes in detail all that he went through before he finally developed AIM Barleygreen (TM) (aka Green Barley Essence).Also, this is great for anyone who wants to know the scientific details of the all the nutrients in Barleygreen, as well as how it is made. I would highly recommend it for anyone looking for ways to imrove their health.