Maintaining healthy cholesterol levels is vital for heart health. Total cholesterol should be below 200 mg/dL for both men and women. LDL ("bad") cholesterol should be less than 100 mg/dL, while HDL ("good") cholesterol should be above 40 mg/dL for men and above 50 mg/dL for women. Triglycerides should be below 150 mg/dL. Men often have lower HDL levels than women, which can increase heart disease risk. Regular check-ups, a healthy diet, exercise, and avoiding smoking help maintain ideal levels. Always consult a healthcare provider for personalized recommendations and treatment if needed.