An individual who purports to be a board-certified cardiologist with an international reputation has been regularly posting to this and other health-oriented newsgroups over the last several years. The posts have been under the name Andrew Chung, with an originating domain of heartmdphd.com and (before that), emory.edu. Other names that this individual has apparently used include Michael Roose and "MU". The posts have the following characteristics: 1. They dispense medical advice on heart disease, diabetes, and weight-loss. 2. They are often off-topic, and are cross-posted freely. 3. They frequently contain threats of legal action for "libel", usually when someone else disagrees with Chung's views. There is an Andrew Chung who resides in the Atlanta area, living in a rather seedy suburb of Atlanta. This indiviudal is unaffiliated with any hospitals in the area, making it extremely unlikely that he has an active medical practice. There is also a Web site, www.heartmdphd.com, that contains a great deal of self-serving information concerning Andrew Chung, and also features a so-called cyberstalking section that hosts insults directed at those who have criticized Chung's on-line articles hyping his "two-pound" diet and other recommended treatments. In all likelihood Dr. Chung is at worst a quack and at best a lonely and isolated individual who compensates for a feeling of failure and emptiness with his online shenanigans. In any case, his medical advice should be avoided, or at least verified by one's own physician.