Cholesterol - LDL Direct

High LDL (“bad” cholesterol) increases risk of plaque buildup, atherosclerosis, heart attack and stroke. Causes include unhealthy diet, obesity, inactivity, smoking, diabetes and genetics. Management involves a heart-healthy diet (limit saturated/trans fats, increase fiber), regular exercise, weight loss, quitting smoking, controlling diabetes and, if needed, medications such as statins prescribed by your doctor. Regular monitoring and follow-up are important.

LDL ("bad") cholesterol is typically classified as: optimal <100 mg/dL; near/above optimal 100–129 mg/dL; borderline high 130–159 mg/dL; high 160–189 mg/dL; very high ≥190 mg/dL. For people at very high cardiovascular risk, clinicians often aim for LDL below 70 mg/dL. Individual targets may vary with age, health and risk factors.

To lower LDL (bad) cholesterol, eat less saturated and trans fats, increase soluble fiber (oats, beans), use plant sterols, and choose healthy fats (olive, canola). Exercise regularly, lose excess weight, stop smoking, and limit alcohol. Control blood sugar and blood pressure. If lifestyle changes aren’t enough, consult a doctor about cholesterol-lowering medications and regular lipid testing.

Low LDL cholesterol usually means lower cardiovascular risk and often isn’t harmful. Causes include genetic factors, lipid‑lowering drugs, hyperthyroidism, liver disease, malnutrition or chronic illness. If LDL is unexpectedly or very low, your clinician may repeat the test and check medications, thyroid and liver function, nutrition and signs of systemic disease to decide if further evaluation or treatment is needed.

Drinking water does not directly lower blood cholesterol. Adequate hydration supports metabolism and can aid weight control; replacing sugary drinks with water may reduce calorie intake and improve lipid levels indirectly. For meaningful cholesterol reduction, prioritize a heart-healthy diet, regular exercise, and medications when indicated, and discuss personalized treatment with your healthcare provider.

No — a directly measured LDL cholesterol test usually does not require fasting. Routine lipid profiles can be done non‑fasting for screening and risk assessment. Fasting may be advised if triglycerides are very high (greater than 400 mg/dL / 4.5 mmol/L), if prior non‑fasting results were abnormal, or if your clinician requests fasting for a specific reason. Follow your healthcare provider's instructions.