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Average retail price per bunch: $1.99

It is high in vitamins A and C, calcium, and iron. One cup will provide 60 percent of your vitamin A requirements, making this very healthy for vision and eye health. It is loaded with chlorophyll which makes Swiss chard one of the most alkaline foods on the planet. The vegetable is especially helpful in fighting menstrual cramps and migrainesaccording to the Physicians Committee for Responsible Medicine. Chards are rich in soluble fiber, which is important in preventing stomach pain, belly bloat and intestinal fermentations.