I am very curious how they can come to the conclusion that unhealthy eating (whatever that means) contributes to cancer. There is so much tied up in that statement. Let's put aside the fact that dietary guidelines for a healthy diet are dubious at best. How would they determine that a person that contraced cancer had an unhealthy diet? Did they simply look at the weight or perhaps the perennially maligned BMI? Did they rely on self reporting? Did they account for changes in diet across the entire lifetime? It is just crazy to think about all the ways that the foundation for such a claim could be faulty.