You can reap spinach's eye health-supporting benefit whether you eat the leafy green fresh, canned, or frozen.
Oxalate is a compound that inhibits calcium absorption, so finding a veggie that packs in the calcium, while keeping oxalate at bay, is key for bone health.
And because romaine lettuce is so well-liked, accessible, and affordable, it is the easiest "gateway" green to recommend increasing in our diets.
Increase broccoli intake by dunking it in a ranch dip as a snack solution or mixing it in with your next macaroni and cheese.
The last vegetable to make the list is Swiss chard. Dark leafy greens are called out in the "Mediterranean-DASH Intervention for Neurodegenerative Delay" (MIND) diet as a food to have every day.