Cholesterol has a bad name, yet your body needs it to build cells and make certain hormones. The problem begins when there is too much of the harmful kind, often called LDL, circulating for years and quietly building up in the walls of your arteries, narrowing the pipes that feed your heart and brain. A cholesterol test reports LDL along with a protective type called HDL and another blood fat called triglycerides, and as the US National Heart, Lung, and Blood Institute explains, a doctor reads these together with your blood pressure, blood sugar, smoking status, age and family history to judge your overall risk.
The most important thing to know is that high cholesterol has no symptoms and does its damage silently over years, so like high blood pressure the first sign can sometimes be a heart attack or stroke. Cardiovascular disease is the world's leading cause of death) according to the WHO, which is why testing matters: it finds a risk you would otherwise never notice in time to act on it.
Here is the honest part that beats the "just walk it off" myth. Diet and exercise help everyone, but when cholesterol or overall heart risk is high they are often not enough on their own. For higher-risk people, such as those with diabetes, existing heart disease, very high LDL or a raised long-term risk, guidelines recommend a cholesterol-lowering medicine such as a statin alongside lifestyle, and needing it is not a failure of effort.
What you can do
- Move most days and break up long sitting; the American Heart Association suggests at least 150 minutes of moderate activity a week, such as a brisk 30-minute walk on five days.
- Build meals around vegetables, fruit, pulses, whole grains and healthy fats, and cut saturated and trans fats such as deep-fried food, vanaspati and fatty or processed meats.
- Stop tobacco and manage your weight where it helps.
- Get your cholesterol and overall heart risk checked so you and your doctor know your numbers.
- If you are prescribed a statin, take it as directed and never stop just because your numbers improved.
Important: Walking and diet help, but if your cholesterol or heart risk is high they are often not enough alone, and medication may be needed. Only a doctor can assess your risk and decide; this is information, not a substitute for that consultation.