 Originally Posted by BrandonBoss
And it also seems like lucidity might be. The brains natural defense mechanism against nightmares. >_>
That's a cool idea, but flawed. Nightmares are evolutionary beneficial, so the brain would never create a natural defense mechanism against them. Besides, if lucid dreaming was a "natural" mechanism, then it would kick in much more often in people's nightmares, especially considering studies that show that a very high percentage of dream possess negative content.
Since our dreams are based on our fears and our expectations, it is really us that makes ourselves go through nightmares.
In the same way, while this makes perfect sense, it also only amounts (at best) at half the equation. Nightmares can be induced simply by sleep posture, acidic stomach, and other psychological factors. Besides, it's relevant to distinguish the several types of dreams, because N-REM dreaming doesn't seem to totally fit into the "fear and expectation" theory.
Was just about to cite the findings of a German study (which I got to get a hold of..), which found, that among the LDing 5-10 % of adults - mental health problems are found to a significantly less degree than in the non-LDing rest of the population.
And there's also stuff like this, who strengthen the argument : Learning lucid dreaming and its effect on depression in undergraduates
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