Overall, cancer seems to be a lifestyle disease.
But that includes people's attitudes and mental health.
Since stress is often a mental thing.
And stress is the big cancer helper (as far as I understand).
If you are a mad and negative person, it is likely your immune system is suffering for it. And if your immune system is deperssed, it is easier for cancer cells to not be noticed and eliminated by the immune system.
What do you think?