Dr Rosedale gave a talk on the effects of excess protein, and how it can adversely impact on health.
Even eating a low-carb diet, there are dangers associated with high levels of protein consumption. Its common for people to cut carbs and increase protein, to make up the calories. Not a good idea. Increasing fat intake is the answer.
The talk was given in 2006 to a American Medics. It's available on Dr Rosedale's website along with a complete transcript of the talk.
Protein - The Good, The Bad, The Ugly.
Read or listen. Talk runs approx 40 minutes.