This is an old news story but I like to investigate what goes wrong on low carb diets. So many people think extreme low carb diets are infallible and everyone should be able to do them.
A UK newspaper, the Telegraph, reported in 2012 the case of a man who almost died while on the Dukan diet, a low carb diet created by French MD Pierre Dukan. (http://www.telegraph.co.uk/lifestyle/wellbeing/diet/9013566/The-man-who-nearly-died-on-the-Dukan-diet.html)
After two days on the “Attack” phase of the diet, which consists of only protein, Ashley Harrison was in the hospital in a coma with encephalopathy (brain dysfunction). In the article, the encephalopathy is attributed to ammonia poisoning. Ammonia is the by-product of protein metabolism in the body and can cause brain swelling.
It happened that Mr. Harrison had a genetic mutation resulting in a deficiency of ornithine transcarbamylase (OTC)
(I am now interrupted and will continue later)