Rapeseed oil contains about 40% erucic acid. This erucic acid is a long-chain fatty acid, which is very harmful to the cardiovascular system function of patients with heart disease. If people with coronary heart disease eat rapeseed oil for a long time, they will continue to receive erucic acid digested by enzymes in their blood, which will overload patients' abnormal cardiovascular function over time, easily induce vascular wall thickening and myocardial fat deposition, and directly endanger the health of patients with heart disease.
And this effect, like the effect of chronic poisoning, is usually ignored and noticed.