OK, thanks Owen. I tend to think that taking C and/or lysine is not going to increase your cholesterol unless there's plenty of it in your plaque which is going to be released by taking the C and lysine. There was an English doctor who found that her heart patients had increases in cholesterol when taking the PT, but normal patients didn't.
Yes, I've been reading nutritionist Walter Last's explanation of the Krebs cycle, and from what I can see (though it's not an easy article to understand for a layman like myself), Walter talks about a balance being required in terms of oxaloacetic acid and acetyl co-enzyme A for good health. He refers to the former as being something to be increased (by the taking of fruit acids e.g. citric acid in lemon juice, and malic acid in apples) to assist in the clearing of arteries, and the latter to be not over supplied (via fats & sugars). He mentions some amino acids, including lysine, which may increase the supply of acetyl co-enzyme A. I think! Here's the link.
http://www.health-science-spirit.com/HF5-2.html#citricSince starting this thread, I came across another site where it's mentioned that too much lysine can be dangerous for the liver. This is odd, since I've never seen anything like that before, lysine is usually regarded as totally safe. I post the link here for your reference.
http://www.earthclinic.com/Supplements/l-lysine.html