The contraindication to eating horse mackerel is that it is forbidden for those who are allergic to this fish. Each 100 grams of horse mackerel contains 139 calories, of which 19.29 grams of protein, 6.3 grams of fat, 76 milligrams of cholesterol, 1.7 grams of polyunsaturated fatty acids, 1.5 grams of monounsaturated fatty acids, 39 micrograms of vitamin A, 1.6 milligrams of vitamin C, 11 milligrams of calcium. Since horse mackerel contains some fat and cholesterol, patients with hyperlipidemia symptoms and hypercholesterolemia need to limit their intake appropriately. Other than that, horse mackerel is a very nutritious food when consumed in moderation by the normal population, as it provides a good source of protein as well as minerals. As a common food, there are no absolute contraindications, except for those who are allergic to the fish. If allergic reactions such as itchy skin rashes and breathing difficulties occur during consumption of horse mackerel, it is important to go to the hospital in time for treatment.