Disclaimer: I know a bit about these things from either personal/friend/family experiences or through my psychology degree. I'm not a clinical psychologist though, I simply graduated a psych program one day.
Before I go into the author's claims let's explain in a visceral way how stress becomes unhealthy. This is how I experience it: stress is normally fine, just like exercising is fine. Stress is just like lifting heavy things. If you do it every minute of the day, at one point your body will collapse and need to heal. So you don't do that.
Well, in some situations the stress can't go away. That is when your mental health starts taking a toll. Imagine if you have to lift 50kg all the time and it can't go away, want to stop? No, you have to lift right now. Broken arm? Lift! You have to! It won't go away. You can imagine that your body would collapse and burn out.
Don't get stress that you can't summon away, because if that stress becomes too much, then you have hitched a ride to the gloomy village of depression. Sometimes you don't have (or don't feel like you have) a choice though, that's the bitter sweetness called life, unfortunately.
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With that said, I think Techcrunch and this author are doing a disservice to the psychological conditions that were listed. Let me show what I mean:
> 2X more likely to suffer from depression
I get that.
> 6X more likely to suffer from ADHD
That seems like self selection people with ADHD seem to me to be better suited for a generalist role. It doesn't seem like you get ADHD because you choose to be a founder.
> 3X more likely to suffer from substance abuse
Stress is a nasty thing.
> 10X more likely to suffer from bi-polar disorder
Seems like self selection the mania states of people with bi-polar can be super productive (or destructive, depending on the person). But again, it doesn't seem like you get bipolar because you choose to be a founder.
> 2X more likely to have psychiatric hospitalization
Did I say that stress is a really nasty thing?
> 2X more likely to have suicidal thoughts
Chronic not-going away stress can do this to a person.
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Leave bipolar and ADHD out of it. Also, psychiatric hospitalization is better than whatever I whenever I'm in San Francisco. Getting help (or being forced to get help) should not be on this list.