Never Never Never use vegetable oils or cooking oils. Diabetes is rampant in the world and out of control in India and China. Why? Because they use cooking oils. Oils become rancid with light and heat. The oils are processed in order to rid them from smelling rancid. This is called extending shelf life. But in fact, the rancidity is still present.
Stop using cooking oils and vegetable oils
The best way to eat your food is organic and raw vegetables. If you must use oil use animal fats and coconut oil.