Homeopathy is one of the most enduring forms of snake oil available to consumers; it has been duping people since 1814. But the United States government only recently decided to clamp down on these bogus treatments, with a new policy from the Federal Trade Commission.
The FTC’s policy statement explains that the agency will now ask that the makers of homeopathic drugs present reliable scientific evidence for their health claims if they want to sell them to consumers on the US market.
Mustering that evidence is likely to be difficult given that homeopathy is a pseudoscience.
The main idea behind homeopathy is that an animal or plant extract that causes symptoms similar to the ones a person is suffering from can cure the symptoms. An example: Because onions make eyes tear and noses run, diluted onion extract is thought to cure cold and hay fever. So homeopathic remedies on the market are just extremely diluted versions of plant or animal extracts believed to bring relief to symptoms.
The trouble is that whenever researchers have looked at the homeopathic treatments, they find they do not actually contain traceable amounts of the original plant or animal material they were supposedly diluting.