I've noticed this a few times and I don't know if it is just me or whether other old farts have had the same experience. It is almost too much of a good thing. :) Makes me wonder what the magic ingredient is. Steak, fish, pork, etc. don't seem to have any affect and yes that includes oysters! :)
BTW, the effect is quite dramatic, at least for me.


Turkey is the best known natural antidepressant and contains the highest amount of serotonin. This may be what works for some in addition to other factors. Additional info below may be of some interest:
squidoo.com menshealth.co.uk