What if we told you one serving of Ontario asparagus has only 20 calories (per 1 2 cup) but still brings major nutritional value including: Folate Vitamins A + K Asparagus Vegetable That Has High Benefits Stock Photo 1531142642 Shutterstock Did you know asparagus is a powerhouse for your health? It's loaded with glutathione a supercharged antioxidant and anticarcinogen! According to the National Cancer Institute, asparagus ranks among the highest in Infusions: Glutathione Rapid Wellness: Your provider of Great Health