Studies work like this (assuming someone is actually citing a study). Peer review means everybody already chewed you out. You know a newb when they get off on peer review. Imagine if only top 40 hits were accessible. "Imagine."
So after the chew out where we all get to point out you're wrong because you set up everything wrong, you used the wrong people, the wrong equations, the wrong premise, this interacted with that... ultimately meaning it's all BS anyway but then, we hopefully come out with significant results showing under these circumstances, the effect doesn't occur by chance 95% of the time, therefore, it occurs for some reason, possibly the one we tested for.
So what I'm saying is "hard" science in the health fields is based on the mathematical statement "well, it's gotta be something." stated as "p=0.05." You make fun of Christians for that. So if anybody tells you xys is good or bad for you, you can send their chubby about-to-have-a-heart-attack *** to statistics class and do what you know is right for you.
P.S., we are all going to be killed by people texting and driving so pickle your liver and get AiDS. You've got 42 years to enjoy.