I don't understand chemistry, but my body seems to understand plants and knows what I need...Fava beans and plants are amazing. God seemed to put everything in them that I need. People are all diifferent and the causes of their PD can range from toxic chemicals exposure .........to bug sprays on food sources.......welding fumes......hereditary .....blows in the head.....foot injury. But, favas work for me, for that I am so grateful. They are a lot of physical work...but they work so well against my symptoms. I would surely be in trouble with my PD without them. I don't want to go to pharmaceuticals and doctors for something I can control so well on my own. Will be planting a fall crop on the 26th of JUly . God Bless