I keep thinking about this when I see the 'cured meats cause cancer' headlines. Do they? I avoid them anyway, but what I wonder is: have the studied controlled

I keep thinking about this when I see the 'cured meats cause cancer' headlines. Do they? I avoid them anyway, but what I wonder is: have the studied controlled for the possibility that people who tend to consume more bacon probably tend to consume more fried food in general and also fewer fruits and vegetables? I've been meaning to look in to this, but perhaps somewhere can point me in the right direction or already knows???