Q. In purchasing frozen fruits and vegetables, does it matter how far the produce traveled to my grocery store? Is frozen produce from Mexico, Chile or the Ukraine as nutritious as that from the US?

A. Alice H. Lichtenstein, DSc, Gershoff Professorof Nutrition Science and Policy at TuftsFriedman School, answers, To my knowledgethere are no data available on this topic.However, freeze/thawing cycles significantlydecrease the quality of the product. Hence,it is in the producers and purveyors interestto maintain high quality, and thus to avoidtemperature changes. The bottom line is thatproperly stored frozen fruits from other countriesshould be fine.