The latest 87 research results show that people with lower levels of high-density lipoprotein cholesterol in the blood are more likely to have memory defects than those with higher levels, and the former are 27% more likely to develop memory defects than the latter. At the same time, high-density lipids Protein cholesterol can transport blood lipids from blood vessels to the liver for treatment, effectively preventing heart disease and other cardiovascular diseases, while low-density lipoprotein cholesterol can transport blood lipids from the liver into blood vessels, causing disease. From this, it can be inferred:. ['High cholesterol content is harmful to human health.', 'People with lower blood lipids are generally healthier.', 'High-density lipoprotein cholesterol can lower blood lipids.', 'Low-density lipoprotein cholesterol in the blood of people with memory impairment.']