Yale's Rudd Center for Food Policy and Obesity offers several resources for communicating with patients about obesity without harming.
Difficult Conversations in Medicine, edited by Elisabeth Macdonald, is a collection of essays about effective communication between health care professionals, patients, and families. Topics range from legal and ethical issues, to planning for such conversations, apologies, strong emotions and cross-cultural issues. Dr. Macdonald is a Consultant Clinical Oncologist from London, and writes in the context of the NHS and , and mostly from the point of view of physicians but will also be useful to other healthcare professionals. Finally, there is an appendix of transcriptions of illustrative conversations in order to see how others have approached them. A review of this book is available in the Journal of the Royal Society of Medicine. You can find this book on the shelves at the library at W 62 D569 2004.
Medical Management of Vulnerable and Underserved Patients by Talmadge King provides coverage of topics such as navigating language barriers, behavorial change, promoting adherence, and group medical visits. 
The Medical Librarian of Laika's MedLibLog describes some of the pitfalls of using Wikipedia for Medical Information. Type just about any topic into Google and a Wikipedia entry will come up, and Laika discusses some indications that doctors use Wikipedia to get medical information. Although some entries are actually written by experts, anyone can write an article, and even more importantly, anyone can edit an article. Wikipedia bills itself as the "Free Encyclopedia" but is much more fluid than a standard encyclopedia. It's not that accurate information can't be found in Wikipedia, but that the potential for altering that information is very high.
MDLinx is a journal article summary service that aggregates articles and research from more than 1,200 peer-reviewed journals and leading news media on a daily basis. Physician editors sort this content into 32 medical specialty sites, 36 patient sites, and more than 743 subspecialty sections, all available online. 
