Since the 70's, alternative and complementary medical approaches have gained more publicity and validity. Therefore, there is now a government agency that actually investigates these claims and there READ MORE http://www.ncbi.nlm.nih.gov/pubmed/16883079
Of course, the Vedas containing Ayurvedic principles date back thousands of years. The theories of Homeopathy described by Samuel Hahnemann were written in the early 19th century. Orthomolecular Medicine is priniciply the contribution of Dr. Abram Hoffner.