The recent questions about the importance of cholesterol numbers as well as the post on Mark's Daily Apple about "Doctors as Middlemen" have led me to the following:
Are there easy ways to participate in health studies that can lead to real answers about the diet we are choosing?
For example, I know that Grass Roots Health has sponsored a multiyear study of vitamin D levels. You sign up to have your levels tested twice per year, and your results get merged with others. Anything else like this happening?
if you put "clinical trials" and "cholesterol" or whatever else you are interested in into your search engine, you'll find various centralized clinical trial listing sites. Sign up to be notified of things that interest you. If you live near a medical school or other research institution, they typically have databases that you can be in so when something of interest comes up, you'll get an email.
You'll find sites like Acurian that will list just about everything going on. Alternatively, for trials for products that may in time seek FDA approval, peruse http://www.clinicaltrials.gov.
I don't know what's out there for you, but you are NOT going to gain control and mastery of this issue. Hate to say it like that, but it is what it is. Many people here cherrypick data to give them false comfort.
Hate to sound so harsh, but I suspect many reading this will agree, at some level.