Cocoas and chocolate products have been used as medicine in many cultures for centuries. Chocolate is made from plants which means it contains many of the health benefits of leafy vegetables. Which of the following statements weakens the above arguments?

I. Dark chocolate contains a large number of antioxidants which slowdowns the aging process.

II. A small study revealed that regular intake of chocolate increase insulin sensitivity thus lowering the chances of diabetes.

III. Green leafy vegetables have flavonoids which protect skin from UV rays.

IV. Chocolates have 3 types of fats one out of which increase the cholesterol level.

V. Cocoas increases blood flow to the retina thus giving a boost to vision.