Homeopathy is not currently explained by science, but it does seem to have a positive effect. It was invented in Germany in the late 1800's. Naturopathy, as it is generally called, evolved in relatively recent years in response to the growing knowledge of the public in medical matters. It treats illnesses by healthy diet, exorcise, and other factors. Many people use Yoga, Tai Chi Juan, or the martial arts to accomplish this.
Aromatherapy is the most recent form of holistic medicine.
It has developed from the perfume industry in the second half of this century. Plant essences are burned or mixed with oil and used in massage. The chemicals in the plant essences have positive physical effects upon the patient, and the scent of the substances have various psychological effects, such as relieving stress, making more energetic, or various forms of relaxation. The Future Holistic medicine has dramatically increased in usage in recent years, and it will most likely increase even more in the years to come. As evidence becomes more available, it will favor the current forms of holistic medicine.