There might be a reason you love a good curry and can’t stomach spinach. A group of European scientists have begun work on a project that could eventually explain everything from your insatiable sweet tooth to your superhuman tolerance for spicy foods. New research on the “genetics of food preferences” suggests our tastes and distastes for certain foods may have their origins in our evolutionary histories, and that our genetic makeup may actually dictate which foods we find attractive, and which ones we abhor. The project – officially called Marco Polo (after the explorer who famously travelled the trade route centuries ago) – examines DNA from a number of cultures and communities along Eurasia’s historic Silk Road in an effort to determine how genetic variation translates to palatal differences within and across cultures. And while Marco Polo’s orchestrators still have significant work to do before the project sees its conclusion, early research has already turned up some interesting results which could, given time, lead to advancements in food science and changes in the direction of food industry research.