Homeopathy is an alternative approach to medicine developed and pioneered by Samuel Hahnemann (17555-1843), a German physician. Practitioners administer highly diluted doses of substances capable of causing the same symptoms or conditions as the illness being treated. It is based on the principle that 'like cures like'. Many people - not least Queen Elizabeth II - have found homeopathic remedies helpful, although their efficacy has been disputed by some scientists and medical practitioners. In 2010, the UK House of Commons Science and Technology Committee concluded that homeopathy has nothing more than a placebo effect. However the NHS continues to fund homeopathic remedies.