CORDELIA MOLLOY / SCIENCE PHOTO LIBRARY CORDELIA MOLLOY / SCIENCE PHOTO LIBRARY
Homeopathy pills. Homeopathy is an alternative medicine that aims to treat diseases by giving extremely dilute doses of compounds that cause the same symptoms as the disease. The more dilute the dosage, the more powerful the remedy. Some of the most powerful doses are so dilute that it is likely they do not contain a single molecule of the active substance. Practitioners attribute this to the "memory" of the water in which they are diluted. Conventional science has subjected these claims to intense scrutiny, but firm evidence of anything other than the placebo effect has not yet been found.
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