2, cottonseed oil is mainly the oil extracted from cotton seeds. Cottonseed oil contains some toxins. It also contains a very large amount of cotton phenol, and once this cotton fen enters the body, it enters the body and damages the renal tubules, impeding the reabsorption function of the renal tubules, which leads to potassium ions not being able to circulate in the body, resulting in hypokalemia. Long-term consumption of cottonseed oil can cause dizziness, headache, fatigue, nausea, vomiting, bloating, constipation and other symptoms, so it is best not to eat cottonseed oil.