Excessive protein ingestion causes kidney failure, hypertension and heart attacks.
Some believe (and allege) that Dr Atkins himself died of his own Atkins Diet. Here are some quotes from news articles and mybuster sites from when he was alive / had just died.
"It is known Robert Atkins did indeed weather a heart attack during his lifetime. In April 2002, the diet guru issued a statement saying he was recovering from cardiac arrest related to a heart infection he had suffered from "for a few years." He said it was "in no way related to diet."
However, revelations in February 2004 from the city medical examiner's report let slip the information that Atkins had suffered a heart attack, congestive heart failure, and hypertension, before his death. "
Sources:
1) Dr. Robert Atkins, proponent of the low-carbohydrate diet, died of a heart attack. http://www.snopes.com/medical/doctor/atkins.asp
2) Atkins diet author home after cardiac arrest: http://edition.cnn.com/2002/HEALTH/diet.fitness/04/25/atkins...
One more note: What about Vegetarians and Lacto-vegetarians? Our diet typically tends to be little high in carbs mainly white rice. What kind of protein sources can we substitute lean meat like chicken, for? Tofu and lentils don't cut it, you have to consume vast amounts to get sufficient protein equivalent. Anyone with useful advice, experience, please share!