Carl O. Helvie
Carl O. Helvie (August 13, 1932 – December 3, 2019) was an American registered nurse and Professor Emeritus of Nursing at Old Dominion University. Helvie is known for his development and implementation of the Helvie Energy Theory of Nursing and Health. As a lung cancer survivor he has focused on holistic alternative integrative health and wellness interventions. A major part of his career also focused on education, practice and research with homeless and low-income individuals and families. He has published books, articles, and research findings in these three areas.