This leafy green tops the chart as one of the healthiest vegetables, thanks to its impressive nutrient profile. One cup (30 grams) of raw spinach provides 56% of your daily vitamin A needs plus your entire daily vitamin K requirement — all for just 7 calories (1). Spinach also boasts a great deal of antioxidants, which can help reduce the risk of chronic disease.

Carrots are packed with vitamin A, providing 428% of the daily recommended value in just one cup (128 grams) (4). They contain beta-carotene, an antioxidant that gives carrots their vibrant orange color and could help in cancer prevention (5Trusted Source). In fact, one study revealed that for each serving of carrots per week, participants’ risk of prostate cancer decreased by 5% (6Trusted Source).

Classified as a root vegetable, sweet potatoes stand out for their vibrant orange color, sweet taste and impressive health benefits. One medium sweet potato contains 4 grams of fiber, 2 grams of protein and a good amount of vitamin C, vitamin B6, potassium and manganese (44). It’s also high in a form of vitamin A called beta-carotene. In fact, one sweet potato fulfills 438% of your daily vitamin A needs (44).