Dr. Cass Ingram is a nutritional physician who received a B.S. in biology and chemistry from the University of Northern Iowa (1979) and a D.O. from the University of Osteopathic Medicine and Health Sciences in Des Moines, IA (1984). Dr. Ingram has since written over 20 books on natural healing and is recognized as one of North America's leading experts on the health benefits and disease fighting properties of wild medicinal spice extracts. Legalized pot is it really a good idea.Students lose memory in 4-year cannabis study