I frequent a Quake 3 gaming forum, which has evolved from a place to game to a community of people.
We have been having a discussion on low-carb diets when one of the people who had very occasionally posted there, and is a physician. I spent a lot of time crafting a response to his concerns. Rather than repeating them here, I leave it to you to look if you are interested. (The link takes you to page 3 of the thread.)