Gurgeh
Silver Baronet of the Realm
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It's rarely just one thing, that's what doctors struggle with. You'll smoke, and various factors (and there are plenty...) will weaken your immune system, your genetics will play a role, your environment will play a role as well, a combination of those factors will land you cancer.It's impossible to isolate diet as a contributing factor. Literally impossible.
Why do some lifelong smokers live into their 90s while others die horribly in their 40s? Everyone knows smoking is absolutely terrible for your health but why is their such a huge discrepancy?
Eat actual food, live better and healthier. That's basically the extent of it. There is nothing in this world more idiotic than people refusing to eat fat because they think it's bad for them and then paying for collagen injections. That's fucking retarded.
Isolating diet is hard, but I believe most studies don't manage to do it, because we're not all cut for the same diet. You'd need studies like "we tried 4 different "healthy diet" for 3 months on random people, and we'd probably notice that people would get improvement from different diet.