The latest research shows that the so-called "good cholesterol" may not be really that good. The study cited a large number of genetic data and found that even if the high-density protein cholesterol (HD. L) level commonly known as "good cholesterol" is increased, it will not reduce the risk of heart disease. It must help; at the same time, people with high HD. L levels due to genetic factors are not at least as likely to have a heart attack than people with low levels of natural HD. L. If HD. L really helps To reduce the risk of heart disease, the former should have a lower chance of developing heart disease. Scholars who have not participated in the study are disturbed by the relevant results. Which of the following is best for the title of this text? ['Genetic factors and heart disease.', 'New findings in heart disease research.', 'Effects of cholesterol on heart disease.', '"Good cholesterol" or does not exist.']