I am no expert, and I have no scientific knowledge to back me up. All I know is my own experience. I have down two parasite cleanses, and now I use a zapper daily. I have had only positive effects from doing these things. I happily give humaworm to my beloved pets. I wish to god that my husband would take it. And I happily zap and cleanse my 16 year old son. I would not do these things if I didn't 100% trust in the process.
I know I have harped on this point before, but my own mother died of ALS. Why in God's name would I give something to my son if I thought for one minute that the same fate would befall him.