Asparagus is a plentiful source of iron, fiber, zinc and vitamins A, E and C. It's also got up to 51% of the recommended daily allowance of vitamin K," said Rebecca Mason, Health Benefits of Asparagus You Didn't Even Know About Blog Agri Your Complete Guide to Glutathione Schoenwalder Health & Wellness Roasted asparagus is one of those simple side dishes that delivers more than just great flavor. It's rich in fiber, which supports gut health and helps lower colorectal cancer risk. Asparagus is Asparagus is rich in antioxidants, fiber, minerals and vitamins. Here are six reasons to add a bunch of asparagus to your cart next time you're rolling through the produce section.