The only flaw in science is humans. That's why you can almost always find a scientific study to back up what you want to be true. Whether it be out of personal belief or financial gain, many people will create a "scientific" study with bias towards results they want. That's why I never see a study and declare it to be true. If anything, I'll wait til the study is repeated numerous times with the same results. Even then I will typically remain skeptical of the claim until I can observe firsthand.

Common sense is what is required here. Just consume everything in moderation and everything will be fine. I don’t believe in depriving myself of anything I enjoy, I just don’t over indulge in any of them (at least I try not too)!

Moderation is the word you’re looking for

Don't want to sound like a conspiracy theorist but I think it's all influenced by $ = what industry is funding the study etc. I remember a slew of commercials about milk (remember the mil mustaches?) and Beef ( It's what for Dinner) and pork ( THe Other white Meat) but never seen one for broccoli. I think it's the same thing with these studies.

Ignore all such BS! When I had breast lumps, about 30 years ago, I was told coffee was the cause, drink none. I had to be at work at 6am......yeah, right!
Now 2-3 cups a day for heart health is recommended, altho I think that is changing again. BS!