Todd wrote:

> but the bottom line is, we just don't know.

All very true. But, knowledge never travels a linear path. Case in point -
for decades nutritional scientists "knew" that the leading cause of heart
disease was high cholesterol levels. I doubt 10-15 years ago you could find
1 in 10 doctors who did not believe that in their very soul. Yet, currently
many, if not most, of those same doctors are questioning what they once
believed was rock-solid.

Sometimes we just have to say "this makes sense", and follow that premise
until proven otherwise. (Although, it would be nice for someone to perform
a few double-blind studies just to clear a few issues up :)