Does a shorter shelf life mean your food is more natural? Not necessarily, according to a new study.Researchers found that shoppers often use shelf life and expiration dates as a shortcut for judging how natural or healthy a pro duct is.The finding emerged from a series of experiments in which participants were presented with identical foods that had different shelf lives.In one experiment, participants chose between pasta sauces with one-year and three-year shelf lives.RELATED STORY | Aldi expands prepared food offerings with new meal lineWhen researchers emphasized the importance of consuming natural foods, nearly 70% chose the item with the one-year shelf life."We provide all the necessary information to make a rational choice. We provide ingredient lists. We provide nutritional facts. But it's a lot to process," explains UBC Sauder associate professor Dr. Yann Cornil, who co-authored the study with Dr. Dan Liu of Jinan University and Dr. Xiaobing Xu of Hainan University.Researchers believe consumers are using shelf life as a mental shortcut when evaluating food products. As a result, they may choose items that spoil more quickly and are more likely to be wasted.The study also found that a longer shelf life can result from improved packaging, not necessarily from additional processing or preservatives.The takeaway: A shorter shelf life doesn't automatically mean a product is healthier or more natural, and choosing shorter-lasting foods could unintentionally contribute to more food waste. ...read more read less