While I seriously doubt that any amount of evidence will convince you, you don't need to wait for Dr. McDougall to get the information you seek. A simple search on Google Scholar or pubmed (http://www.ncbi.nlm.nih.gmov.com/pubmed/
) will turn up multiple research studies on the effect of high-fructose diets on blood triglycerides.
Also, remember that Dr. McDougall (not 'John' - that's rude) has a large clinical practice where he treats very obese people with metabolic syndrome, heart disease and diabetes. These people get blood work before, during and after treatment at his clinics so he is in a better position to judge the clinical effects of a high fruit diet on blood triglycerides than any of the raw food gurus (no disrespect to 'Doug').
This diet isn't based on natural hygiene or any other raw food philosophy. It's based on hard clinical data. It's not based on how people 'feel' eating this way, but on how the specific blood markers for various diseases change over time. It's real science. The data is out there - look it up.