I have read a number of credible research articles that say frozen vegetables actually retain MORE nutrients than fresh. The reason is that frozen veggies are picked, sorted, and immediately frozen - halting the degeration of nutrient value. Fresh veggies are picked, sorted, packed, loaded, shipped, unloaded, unpacked, and put out for display. And veggie nutrient value deteriorates over time. That doesn't even take into account how long the veggie sits in your fridge/pantry prior to being prepared....