Bo H Jonsson, M.D., Ph.D., has been a practicing psychiatrist for thirty years. He studied medicine at Lund University and later at the Karolinska Institutet in Stockholm, where he received his medical degree and wrote his medical dissertation. He is affiliated with the Department of Clinical Neuroscience, Section of Psychiatry, Karolinska Institutet. Currently he is medical director of the Center for Affective Disorders, North Stockholm Psychiatry, St Göran's Hospital, Stockholm. Dr. Jonsson is on the editorial board of the Journal of Orthomolecular Medicine, and is president of the Swedish Society for Orthomoleclar Medicine.