Cold shredded potatoes are rich in B vitamins such as vitamin B 1, B2, B6, pantothenic acid, and a lot of high-quality cellulose, as well as trace elements, amino acids, protein, fat and high-quality starch. Potato starch is a kind of resistant starch (eaten by diabetics). It has the functions of lowering blood pressure, reducing blood fat, moistening intestines and relaxing bowels (helping to lose weight).