This book does have useful advice, however, it does not replace a doctor, and some of the advice is peculiar. I would take it with advisement, because one piece of advice is to eat a cigarette to kill intestinal worms! Sounds dangerous to me. But there is a lot of warnings of what to do and what not to do, and also a lot of encouragement to train in first aid. If you want a reference guide for how to heal yourself, this is not a good book. If you want a book to motivate you to train in first aid, or a guide on having a comprehensive first aid kit at home, this can help you.