A 2006 review concluded that there was no link between omega-3 fatty acids consumption and cancer. This is similar to the findings of a review of studies up to February 2002 that failed to find clear effects of long and shorter chain omega-3 fats on total risk of death, combined cardiovascular events and cancer.
U.S. Department of Agriculture plant hardiness zones 5 through 8 support sweet cherry trees (Prunus avium), which require a period of winter chilling. Dozens of commercially available trees bearing sweet, luscious cherries include Bing, Black Tartarian, Stella and Ranier.. Two or more pollen-compatible varieties must be present for successful cross-pollination and fruiting; self-fruitful exceptions include Stella, Glacier, and Sweetheart..
Then there's disease, to which sweet cherries are highly susceptible - even more so than sour cherries. All these factors help drive the cost of sweet cherries a little higher, even in season. An estimated 2,500 cherry growers in Washington, Oregon, Idaho, Utah, and Montana produce the most sweet cherries in the US. Iran, Turkey, Italy, and Spain also do well in this crop.