Research suggests that the naringenin in grapefruit can lower blood sugar levels - and its mechanism of action is extremely similar to that of metformin. This is why it is important to remember that their combined use can lead to hypoglycemia.
Berries and fruit help you have whiter teeth. They are full of antioxidants that help remove free radicals and oxidants that cause stains on teeth. Berries also contain malic acid which is a natural teeth whitener.
