>Ignore EVERYTHING a doctor tells you about cholesterol.
Except for triglycerides. Triglycerides are extremely dangerous and strongly correlated to arteriosclerosis. There's evidence that triglycerides are formed in the liver when it's forced to process fructose.[1] They're also implicated in non-alcoholic fatty liver disease.[2]
Don't ignore your doctor telling you about bad numbers, but take his/her advice as to what to do about it with a few grains of salt. Dietary cholesterol intake has little to do with the cholesterol in your blood. [3]
>Diabetics take note.
I agree with your basic premise that reducing carbohydrate intake can help with various metabolic diseases, but people with Diabetes need to be EXTREMELY careful. Often they've been on pills and injected insulin for such a long time that their body has adjusted and simply stopping the treatment could actually kill them. These individuals have an extremely dysfunctional carbohydrate metabolism and the transition to a low-carbohydrate metabolism is often accompanied by fatigue often called Keto Flu. [4] This kind of benign fatigue mimics dangerous hyper and hypoglycemic events that can require medical attention.
Diabetes can be treated by a low-carbohydrate diet, but the transition off medication needs to be supervised by a medical professional familiar with the practice.
1. http://www.ncbi.nlm.nih.gov/pubmed/3513615 2. http://www.ncbi.nlm.nih.gov/pubmed/18460922 3. http://www.scribd.com/doc/101760834/Low-Carb-Research 4. http://elowcarbfoodlist.org/the-keto-flu-symptoms-and-relief...