If they were looking might they also find that those who ate the most brussel sprouts also had higher levels of Alzheimer's?

If you look for an association of people who eat a particular thing and people who have a disease, I can't help but think some of the time you're going to be just completely wrong.

Maybe its not what they're eating, but what they aren't eating or genetic?

What about people that eat lots of saturated fats and have good cholesterol readings?