The homeless have become a fixture of the urban landscape in cities across America. One psychiatrist spent two years speaking to the mentally ill living on the streets of San Francisco, learning about their lives. Now he shares those stories, along with his ideas about how to improve our homelessness and mental health problem nationwide.
Doctors and researchers discuss the benefits and risks of vitamin D and why some Americans may not be getting enough of it.
- Joan Lappe professor of nursing and medicine at the Creighton University School of Medicine and investigator with Creighton's Osteoporosis Research Center.
- Joan McGowan Director, Musculoskeletal Diseases Branch and the Bone Diseases Program at the National Institute of Arthritis and Musculoskeletal and Skin Diseases.
- Paul Coates Director, Office of Dietary Supplements, National Institutes of Health
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