Vitamin E works as a mild blood thinner, so those on blood thinning medications should consult their doctor before taking vitamin E supplements. Soy sauce contains compounds that may help thin blood and reduce risks of clotting and stroke, but it is high in sodium so should be used sparingly. All fruits and vegetables contain some naturally occurring pesticides beneath their skin that balance out cancer-causing and preventing agents. Cottage cheese contains the most protein of the options listed at 30 grams per cup.