The Onion (I think this may be in response to the WHO's report on meat causing cancer):
Saying the effects were almost immediate and largely unavoidable, the National Institute of Food and Agriculture released a report Tuesday linking red meat to contentedly patting one’s belly. “Our data show a strong, statistically significant correlation between consuming servings of red meat and pushing back one’s chair, letting out a satisfied sigh, and gently patting or rubbing one’s abdomen with either one or both hands,” said lead researcher Elliott Hyde, who explained that eating cuts of beef, pork, or lamb was also found to cause acute sereneness and glazing-over of the eyes.
Yet, correlation doesn't prove causation. A good researcher should develop some theory before testing this with regression analysis.