I’ve developed a new fear of cancer. I’m even scared that just thinking and creating scenarios about it in my mind will eventually get me cancer! I read many scientific studies that claim that stress causes cancer even if indirectly by suppressing the immune system and elevating cortisol level. And if this is true then I’m sure I’ll get it. I’ve been stressed now for 8 years and been severely stressed for the recent 6 months and I believe this stress had affected my physical health in one way or another. Are these studies reliable?