Although over 300 varieties of asparagus are known to exist, only about 20 are considered to be edible. With its origins in the Mediterranean, this vegetable has been used medicinally for about 2000 years.
Asparagus contains purines, which break down to form uric acid, so people prone to kidney stones, gout, or other uric acid-related problems, may want to avoid eating this vegetable. A more harmless side-effect of eating asparagus is the presence, soon after eating it, of a strong odor in the urine caused by the natural formation of various compounds.
Asparagus is especially high in Vitamin K, Folate, Vitamin A, and Iron, making it an excellent food to eat during pregnancy.
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