Comment Re:nutrition is a garbage field of research (Score 1) 114
> If we do a study following 100,000 people for 20 years and find a strong correlation between falling off a roof and breaking an arm, sure pedantically you can't show a causal link but we've learned enough to say falling off of a roof is bad for you.
That's not really a very good analogy.
A better one would be if a study followed 100,000 people who drove pickup trucks, and found that they're more likely to have permanent hand injuries like missing fingers. If that were true, it obviously wouldn't be _because_ of the pickup truck. Instead, the two things are correlated - and the cause is probably more like "carpenters drive pickup trucks" and "carpenters cut their fingers off a lot".