Plain oil, a substance, was originally written without the word "oil". It was called "cream" or "fat" in the early days. Early oil was extracted from animals. The earliest appellation is that angular refining is called fat, and angular refining is called paste. Animal oil, which has been used for a long time, has vegetable oil because of the birth of oil pressing technology. The extraction of vegetable oil began in the Han Dynasty. In the Ming Dynasty, more and more varieties of vegetable oil were extracted from plants.

Vegetable oil produces as much heat as meat oil.

Generally speaking, most vegetable oils are healthy oils, and diabetics can cook with vegetable oils. But if eaten improperly, it will also bring adverse effects and even harm to the body. Vegetable oil and animal oil are both high-energy substances, and the energy generated in the body is basically the same as that of meat oil, releasing about 9 calories per gram. The direct consequences of excessive intake are obesity, hypertension and coronary heart disease.

The suitable ratio of saturated, monounsaturated and polyunsaturated fatty acids in diet is 1: 1: 1. Unsaturated fatty oil will be beneficial to health only when the various fats contained in it reach a balance. Most vegetable oils contain high unsaturated fatty acids, so if you eat too much vegetable oil and too little animal food, it will lead to dietary fatty acid imbalance, which is not good for your health.

Refer to the above content: Baidu Encyclopedia-Clear Oil