Interestingly, among people who have Helicobacter pylori in their stomachs, only a subset develops ulcers. Some people have bacteria, but no ulcer. I don't know if there is a consensus on why this happens, but it is correlated with stress. If you are stressed and have h.pylori, you are more likely to develop an ulcer, compared to h.pylori and no stress.
So the consensus was wrong, but still not a hundred percent wrong.
Why Zebras Don't Get Ulcers, Third Edition
Quite a fascinating book on stress.
So the first time(s) you use cocaine, you get a high that's incredible. The second time, this effect is about 100 times stronger than usual, so 10 times less strong than the first time.
Then you want to go back to that first unbelievable fantastic time, and take more. You may get at 200, but the more often you take it, the less the effect, and the stronger the craving for it. This is more or less how (this) addiction works.
The numbers I use here may be different, but it shows more or less how it works. Well as far as I understood it from the book Why Zebras don't get Ulcers which is about stress and all its side effects.
"Brain Rules" by John Medina [http://amzn.to/UCgCPG]
John, a molecular biologist, looks at things such as health and cognitive development and performance of kids and adults from an evolutionary perspective.
He highlights problems with our approaches to work and study, how these are at odds with the way our brains evolved to work and what we can do about it.
Great collection of actionable advice backed up by current research. See more at http://brainrules.net/
"The world until yesterday" by Jared Diamond http://amzn.to/1AAJjNL
Great book on how "traditional" societies handle trade, war and interpersonal conflicts. Lots of thing to consider taking on board in "modern" societies - such as restorative justice.
"The Antidote: Happiness for People Who Can't Stand Positive Thinking" by Oliver Burkeman http://amzn.to/1rITiKX
Great overview of pitfalls that "positive thinking" approach brings and how one can start employing alternative ways of attaining happiness.
2. Why Zebras Don't Get Ulcers [ http://amzn.to/1kFszdH ] - great book on stress and its effects by Robert Sapolsky (have you seen his lectures on behavioural biology? Fascinating stuff, even if you always thought 'meh, biology' - the guy is an amazing lecturer)
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