Homeopathy: Homeopathy means curing "like with like". It was developed in the late 18th century by Samuel Hahneman, a German physician. Hahneman perceived that symptoms of disease were simply the body's way of defending itself and attempting to restore balance. By researching remedies Hahneman determined that producing 'like' symptoms would allow the body to induce a natural healing response. The three basic principles to homeopathy are: prescription by the law of similars, minimum dosage, and singular dosage.
In the 1930s the popularity of homeopathy declined, especially in Europe and the USA, in part due to advances in conventional medicine which led (in the USA) to the closure of virtually all medical schools teaching alternative medicine. Later in the 1970s homeopathy "had a renaissance" largely in part because of acclaimed medical scientists switching over to homeopathic methods and practices.