Hard to say: It's like cravings, it's not exactly known what drives these. Some may be "conditioning" related, as in you've had a "bad" experience with greasy foods in the past, such that it will repeatedly evoke a response like you describe, almost like PTSD!
Answered 1/16/2015
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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