Food Cravings: What They Really Mean | Next Avenue (PBS) | CALS in the News | Scoop.it
“Start with the presumption that the true, original `value’ in cravings relates to survival,” explains Dr. David Katz, director of Yale University’s Prevention Research Center in New Haven, Conn. “Iron is a soil nutrient, so chewing on clay or gritty material may mimic the original source of iron for our ancestors. The craving may persist because those who had it benefited from it. This is conjecture, but it makes sense.”