As a matter of fact, the domestication of this small, round red stone-fruit dates to before recorded history. Besides, its cultivars are all practically derived from two species— sweet cherries and sour cherries. The difference between these two species should be obvious from the way they've been categorized, considering tart cherries are, well, tart, whereas sweet cherries can range from slightly to intensely sweet. Nutrition-wise, cherries are high in vitamin A, iron, lycopene. Laxative. They also stimulate internal organs, prevent tooth decay, cavities, and are good for prostate, not to mention that they’re also rich in antioxidants.