Superfood Smackdown! And the Healthiest Choices Are...
Winner: Chia seeds There's no debate that both seeds should be celebrated for their high concentration of heart-healthy omega-3s, but chia seeds happen to be a better source of calcium, with two tablespoons providing up to 16 percent of your RDA—four and a half times the amount in the same quantity of ground flax. And with nearly 150 percent more phosphorus and more than 100 percent more manganese (two minerals that play key roles in bone formation), chia seeds get the gold medal for helping to build and maintain strong bones.
Next: 25 superfoods to incorporate into your diet now