A healthy range for total cholesterol levels is typically considered to be below 200 mg/dL. Levels between 200-239 mg/dL are regarded as borderline high, while levels of 240 mg/dL and above are classified as high cholesterol. Maintaining total cholesterol within these guidelines is crucial for reducing the risk of heart disease and related cardiovascular issues. Individuals should also monitor their levels of LDL ("bad") cholesterol and HDL ("good") cholesterol, as both play essential roles in heart health.