...Short road back out, too.
I think I figured something out. I had a couple of bouts of really dark, dark depression recently, one lasting for several days. I didn't know why and I remembered having similar troubles about this time last year.
Cabin fever? Seasonal affective depression?
Oh, two more items: each period of depression was preceded by several hours of happiness. Annnnd-- this time of year, I have access to really, really good cookies covered in rich, dark chocolate.
My self-control around those good cookies...not what it should be. Each time I got the blues, I'd eaten more of 'em than I should've the day before. Not quite half a box over a few hours. That's way too much.
Back when the docs were working on my migraines/facial pain thing, they tried a class of drugs that mess with serotonin levels. (Antidepressants: they've been known to work on otherwise-intractable pain in some cases. Draw your own conclusions). I was very sensitive to them and they had unsettling effects. Dark chocolate, enough of it, is thought to increase serotonin levels in the brain* and if you use that stuff up quicker than you make it, you can get a nasty little serotonin crash: you run plumb outta the stuff.
I have moderated my dark chocolate cookie intake. I feel about two hundred percent better. Correlation isn't causation, but....
* Exactly what goes on with serotonin in the brain isn't well understood; for some reason, people aren't lining up to get their gray matter plumbed into a chemical analysis set-up. Research on SSRI drugs and related matters is pretty empirical; they feed drugs to volunteers and use indirect means to figure out their effects.
4 weeks ago