Some unproven treatments really do work. Unproven treatments can make people worse. Quacks use people's fears to make money. People aren't likely to buy a quack products if there is a money back quarantee.
Some unproven treatments really do work. Unproven treatments can make people worse. Quacks use people's fears to make money. People aren't likely to buy a quack products if there is a money back quarantee.