There are many kinds of raw materials for shortening. Generally, higher-end shortening is made from coconut or palm oil. Generally, it is mainly made from soybean oil. Most people will not eat shortening directly. The main thing that is harmful to the human body is trans fatty acid. This kind of fatty acid is not absorbed by the human body, so it will accumulate in the human body. If it accumulates too much near the cardiovascular system, it is easy to get cardiovascular disease.