There has been a dramatic rise in the consumption of vegetable oils and vegetable fats extracted from soybean, sunflower, cottonseed, peanut, palm and many other plants or seeds in recent years. The increased production was followed by the belief that vegetable oil is much healthier food compared to animal fats like butter or ghee. Earlier it was much more difficult to extract vegetable oil, but advancement in technology has made the task easy today. When the labels claimed that the vegetable oils are healthy foods which are friendly for your heart, not many have asked for the substantial proof regarding this claim. Recent studies have shown that vegetable oils have quite some harmful effects on our health, of which some can be quite shocking. Here is the list of 7 most harmful effects of vegetable oils.