Spectacles wrote:
I read an article a few years back claiming that in general, pessimistic people outlive optimistic people because they have more realistic expectations and thus were more cautious with their life choices. A few months later, I found an article claiming the exact opposite, that pessimistic people tend to suffer more anxiety and stress related diseases that kill them off earlier. I was pessimistic about the first article, optimistic about the second, and confused about the whole. Just a fun example in how numbers, science, and goals can get all tangled up in a bunch. It's really tough to measure these things.
Yes, the more you read these studies the more you realize they are not all of the same value or even correct. I remember the one you mention and was also doubtful. Many new studies are rather BS in my opinion and only involve sifting thru statistics. They don't involve actual experimentation or anything new. I think of these as lazy scientists coming up with junk so as to appear active - publishing studies.
Where they are published matters as well. The most serious are put into professional periodicals for peer review. Ones that are published in just popular sources are suspect to begin with.
Lastly one study alone does not normally establish facts. For that, the results must be repeated and validated in additional tests by other researchers.
For this reason I almost ignor any claims made on various foods being good or bad for you. I have seen so many reversed over time, and even reverse again. Often they are looking at too narrow a thing and not the entire systematic picture.