Broccoli
It contains plenty of Vitamin C, its preventive properties of certain cancers have been showed. The daily consumption of broccoli is associated with a lower concentration of homocysteine, an amino acid. The increase of homocysteine amount is proportional to the risk of cardiovascular disease.
Sweet potato
In addition of its magnificent flavor, sweet potato has a high content of antioxidants, thanks to the anthocyanins and carotenoids it contains. Sweet potato with white peel would have the effect of reducing the resistance to insulin, which favor the glycemic control.