Background: Previous research indicates that total cholesterol levels increase with age during young adulthood and middle age and decline with age later in life. This is attributed to changes in diet, body composition, medication use, physical activity, and hormone levels.
100 – 129 mg/dL is near ideal. 130 – 159 mg/dL is borderline high. 160 – 189 mg/dL is considered high. 190 mg/dL and higher is considered to be very high.
According to Michos, an ideal LDL cholesterol level should be less than 70 mg/dl, and a woman's HDL cholesterol level ideally should be close to 50 mg/dl. Triglycerides should be less than 150 mg/dl. As Michos notes, total cholesterol levels well below 200 mg/dl are best.
Blood cholesterol is measured in units called millimoles per litre of blood, often shortened to mmol/L. As a general guide, total cholesterol levels should be: 5mmol/L or less for healthy adults. 4mmol/L or less for those at high risk.
Total cholesterol of 5.8mmols/l is higher than recommended, but could be reduced with simple diet and lifestyle changes rather than medical treatment.
Untreated or undertreated high cholesterol is associated with a lower life span due to the risk of heart attack and stroke, but it's still possible to live a long life with high cholesterol, provided you follow a heart-healthy lifestyle and take medication if needed.
Total cholesterol levels steadily increase with age from 20 to 65, following which they decrease slightly in men and tend to plateau in women. Elevated cholesterol levels are not uncommon in the elderly (61% of women aged between 65 and 74 have total cholesterol levels over 6.2 mmol/L [240 mg/dL]).
Above 6 is considered high.
A person is considered at high risk for developing heart disease if their total cholesterol level is higher than 240 mg/dL, LDL levels are higher than 160 mg/dL (190 mg/dL is even higher risk), and if the HDL level is below 40 mg/dL.
Types of Cholesterol
Levels of LDL cholesterol higher than 130 milligrams per deciliter (mg/dL) are linked to an increased risk for ischemic stroke.
Soluble fiber can reduce the absorption of cholesterol into your bloodstream. Soluble fiber is found in such foods as oatmeal, kidney beans, Brussels sprouts, apples and pears. Add whey protein. Whey protein, which is found in dairy products, may account for many of the health benefits attributed to dairy.
Exercise can help you lower cholesterol numbers even if you're overweight. In the Journal of Obesity, researchers reported that overweight and obese adults who walked, jogged, and cycled while eating a cholesterol-lowering diet improved total cholesterol, LDL cholesterol, and triglyceride levels.
Between the ages of 55 and 64, those levels average 240 mg/dL. Total cholesterol levels between 200 and 239 mg/dL are considered borderline high, meaning you have a "borderline-high" risk of developing heart disease. Levels of 240 mg/dL and above put you in the high-risk category for developing heart disease.
Chronic stress leads to consistently high levels of stress hormones, which in turn can lead to consistently high blood pressure, blood sugar, cholesterol, and/or triglycerides.
Can you be healthy with high cholesterol? High cholesterol levels can be a risk factor for heart disease and stroke. While high levels of HDL cholesterol can be protective for heart health, high levels of LDL cholesterol can be harmful.
The longer you have high cholesterol, the more likely you are to develop heart disease. In one study, people who had high levels for 11 years or more had double the risk than those who had them for 10 years or less.
– your total cholesterol level should be below 4 mmol/l – your bad LDL cholesterol level should be below 2 mmol/l – your good HDL cholesterol level should be above 1 mmol/l. If your total cholesterol level is over 4 and your LDL is over 2, this shows that you might be at higher risk of a heart attack or stroke.
If your total cholesterol level is 200 to 239, you have a borderline level. The word “borderline” is used because levels of 200 to 239 are close to being high. A total cholesterol of 240 or above is a high level. If your LDL level is 130 to 159, you have a borderline level.
High cholesterol levels are considered: too high: between 5 and 6.4mmol/l. very high: between 6.5 and 7.8mmol/l. extremely high: above 7.8mmol/l.
Eating too many foods that are high in cholesterol, saturated fats, and trans fats may increase your risk of developing high cholesterol. Living with obesity can also increase your risk. Other lifestyle factors that can contribute to high cholesterol include inactivity and smoking.
Normal cholesterol range in Australia
As a guide, health authorities recommend cholesterol levels should be no higher than 5.5 mmol per litre if there are no other risk factors present, or LDL levels less than 2 mmol/l for those who smoke, have high blood pressure or pre-existing heart disease.