Why does barometric pressure affect my depression?

Barometric pressure, warm fronts, and storm fronts seem to affect my depression. Just before a storm I get depressed, and when the storm arrives, I feel much better. I assume this has to do with the pressure of the weather front.

Either that or it's humidity. But that seems odd for snow storms, which have the same effect. Does anyone have information linking barometric pressure to depression?

I'm currently writing a paper about depression and have never come across anything about barometric pressure, and a quick search on pubmed gave nothing, so I assume there are no literature linking them together. However, I do remember reading something about barometric pressure being linked with seasonal affective disorder (SAD), which is basically depression that follows a seasonal rhythm, but can't remember what was said about it, but I would start looking for answers there.

Your right that humidity seems odd, or at least more odd than pressure, since pressure would bring about more changes in your internal regulation systems. like high pressure can cause metabolic changes that I guess could affect the uptake of antidepressants or perhaps even turnover rate in neurotransmitters and other molecules indicated in the etiology of depression. However, the pressure change before a storm would be slight, so I have a hard time seeing this as an explanation.

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