I found it interesting that they focused on total, HDl and LDL, without reference (unless I missed it; I was multi-tasking) to triglycerides.
Amigo - I eat a reduced carb diet and during the period I ate oats, each morning at breakfast, my cholesterol did reduce a fair amount, but then, my overall diet was being modified, so difficult to accurately state that made a difference.
Coincidentally, in that period, my trigs improved, but not by as much as after I gave up oats on a regular basis. Trigs are definitely related to carb consumption.
My overall totals have never gone under 5, and only once they've gone below 6, but my breakdowns are excellent. For some time, I had to serially negotiate my way away from statins, but having educated my GP (when I go I always make sure I am well informed about the topic in question, for statins, I left her with links to websites and papers of interest). Last time, my numbers were down a whisker, and I mean a whisker, but suddenly she changed from, "maybe we should refer you for a specialist lipid opinion", to "you must be utterky delighted with those numbers".
Sadly, I still believe many of our GPs are struggling to stay up to date with the research that we may find fascinating; such is the pressure of trying to keep abreast of information on diabetes, hypertension, stress, BP, lipids, pain/back ache, worn out joints and all those other chronic conditions that are on the increase.
I feel for GPs. I would hate to be a GP these days!