HDL 1.07 mmol/L is not severely low and is normal. HDL is the group of lipoproteins with the highest particle density in serum, and it plays an important clinical role in diagnostics, as an important indicator for early identification of atherosclerosis risk, and as a reference for monitoring the response to lipid-lowering drug therapy. Normally, the reference level of HDL is >1.0 mmol/L, which is a normal and appropriate level, while when it is ≤1.0 mmol/L, it is low. Therefore, an HDL of 1.07mmol/L is not considered to be seriously low, but is a normal and appropriate level. It is recommended to maintain a healthy lifestyle in daily life, have a reasonable diet, avoid using a lot of high-calorie and high-fat food, and do physical exercise appropriately. Patients with abnormal HDL are advised to go to the hospital as soon as possible and take treatment according to the doctor’s advice.