Go here to read the abstract (Mike's blog)
Go here to read the thesis
The research is from New Zealand but I'm sure would be applicable to other western countries as well.
Food is the daily sacrament of unnecessary goodness, ordained for a continual remembrance that the world will always be more delicious than it is useful.
Honesty compels me to admit that there are times when exactly the wrong person at exactly the wrong time with exactly the wrong motives has nevertheless said exactly the right thing.