Chives may be small but can pack a nutritional punch. They're high in essential vitamins and minerals, such as potassium and vitamins A and C. Chives also serve as a significant source of calcium, iron, phosphorous, and sulfur. They're also beneficial to the digestive system, and their phytonutrients keep the circulatory system healthy and improve blood circulation. Their mild taste can help parents prepare their little ones for the introduction of onions. Because they contain both choline and folate, chives can also assist in the brain's memory improvement and help the body produce DNA and RNA.