High blood lipids primarily refer to elevated levels of cholesterol, triglycerides, and low-density lipoproteins in the blood. Some patients also show reduced levels of high-density lipoproteins. As for precautions for high blood lipids, the first is diet: it is essential to adopt a light diet and to avoid greasy foods, such as braised or fried items as much as possible. Secondly, control the amount of cooking oil used, and try to avoid animal fats, opting instead for vegetable oils. Additionally, it is advisable for those with high blood lipids to consult a specialist at a hospital promptly to determine if medication is required for treatment.