I was wondering if anyone has heard of anything that links caffeine to depression. Actually, not just caffeine, but food allergies, like dairy? I recently discovered that when I drink coffee, soda, or even eat some chocolate or ice cream, I break out, and get dark circles under my eyes. (looks like 2 black eyes) It hasn't always been like this, maybe just in the last 3 years or so. Of course the black eyes, and pimples get me down, but I also get EXTREMELY agitated when I'm crashing after the caffeine high goes away. Then, after that, I feel soooooo low. I was curious if anyone had any info on what caffeine or food allergies do to make some people feel this way.