These grungy-looking roots are naturally sweeter than any other vegetable, which means they pack tons of flavor under-neath their rugged exterior. Why they’re healthy: Think of beets as red spinach. Just like Popeye’s powerfood, this crimson vegetable is one of the best sources of both folate and betaine. These two nutrients work together to lower your blood levels of homocysteine, an inflammatory compound that can damage your arteries and increase your risk of heart disease. Plus, the natural pigments — called betacyanins — that give