We have owned the book for about 10 years. The information in it is verifiable and interesting. We bought a zapper many years ago and used it a lot. The results were phenomenal. My late husband had Multiple Sclerosis, and a daughter had parasites. Both were had incredible results, and we have applied her suggestions in many areas of life. If you love to read information about health breakthroughs that WORK, you should read Hulda Clark’s book!