Are Home Cholesterol Testing Kits Accurate
The answer is yes if the tests are labeled CDC-certified. This means that the contents have been approved by the Cholesterol Reference Method Laboratory Network, a group that works with test makers, laboratories and the Centers for Disease Control and Prevention to make sure tests are accurate.
For home tests, you will still need to fast for 12 hours and to obtain blood for testing. Some kits come with packages for mailing to a lab for results. Other kits have a monitor so you can get the results at home. The cost of such home kits varies.
Dietary Assessment And Covariates
In each survey, the dietary intakes were measured by the trained-well staff at both the household and individual levels . Individual dietary data were collected using 3-d 24-h dietary recalls. All the food consumed at home and away from home, including take-out foods, were weighed and recorded at the beginning and the end of the 3-d 24-h dietary recalls. Cooking oil and spice consumption for each individual was estimated using the weighted household intake. All the nutrient intakes from various foods were assessed and calculated using corresponding versions of the Chinese Food Composition Table . The cumulative average of a specific food intake was calculated by the sum of intakes from the round when hypertension was first ascertained to the last survey year divided by the number of waves. Intake of a specific nutrient was calculated by the same method. Accumulating averages of the intakes of foods or nutrients could represent the individual long-term dietary patterns and reduce within-person variation.
In a validation study, the correlation coefficient between the total energy intake calculated by the dietary assessment method in the CHNS and that measured by the doubly labeled water method was 0.56 for men and 0.60 for women . We also divided the dietary cholesterol into cholesterol from eggs and other foods to accurately evaluate the effect of various sources of dietary cholesterol.
Normal Cholesterol Levels By Age
Cholesterol is a waxy, fat-like substance that plays many roles in the body, including synthesizing hormones and vitamin D. It also assists in the transporting of lipids. Cholesterol is found in the foods you eat, but it is also made by the liver.
We need some cholesterol to build healthy cells, but an accumulation of the bad kind can be problematic, increasing the risk of atherosclerosis. The recommended ranges for your cholesterol will depend on your age. Find out what cholesterol levels are, why age is a factor, and how to keep your levels within a healthy range.
Verywell / Jessica Olah
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Safe Blood Cholesterol Levels
Health authorities recommend that cholesterol levels should be no higher than 5.5 mmol per litre if there are no other risk factors present. If there are other cardiovascular risk factors such as smoking and high blood pressure or pre-existing cardiovascular disease, then the aim for the LDL levels would be less than 2 mmol/l. Approximately half of all adult Australians have a blood cholesterol level above 5 mmol/l. This makes high blood cholesterol a major health concern in Australia.
Getting Help For Your Child
If you are worried about your child’s weight, consider consulting with a registered dietitian or expressing your concerns with your pediatrician.
Children can benefit from getting involved in meal planning, shopping, and cooking, reducing intake of sweetened beverages, and learning how to eat more fruits and vegetables. Being a good role model and getting the entire family on board is also important for making changes and providing your child with confidence.
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Effects Of High Cholesterol Levels
The liver is the main processing centre for cholesterol and dietary fat. When we eat animal fats, the liver transports the fat, together with cholesterol in the form of lipoproteins, into our bloodstream.
Too much cholesterol circulating within LDL in our bloodstream leads to fatty deposits developing in the arteries. This causes the vessels to narrow and they can eventually become blocked. This can lead to heart disease and stroke.
What Are The Different Types Of Cholesterol
Cholesterol does not travel freely through the bloodstream. Instead, it is attached or carried by lipoproteins in the blood. There are three types of lipoproteins that are categorized based upon how much protein there is in relation to the amount of cholesterol.
Low-density lipoproteins contain a higher ratio of cholesterol to protein and are thought of as the bad cholesterol. Elevated levels of LDL lipoprotein increase the risk of heart disease, stroke, and peripheral artery disease, by helping form cholesterol plaque along the inside of artery walls. Over time, as plaque buildup increases, the artery narrows , and blood flow decreases. If the plaque ruptures, it can cause a blood clot to form that prevents any blood flow. This clot is the cause of a heart attack or myocardial infarction if the clot occurs in one of the coronary arteries in the heart.
High-density lipoproteins are made up of a higher level of protein and a lower level of cholesterol. These tend to be thought of as good cholesterol. The higher the HDL to LDL ratio, the better it is for the individual because such ratios can potentially be protective against heart disease, stroke, and peripheral artery disease.
Very low-density lipoproteins contain even less protein than LDL. VLDL like LDL has been associated with plaque deposits.
Triglycerides may increase cholesterol-containing plaques if levels of LDL are high and HDL is low.
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The Average Daily Fiber
Cholesterol is a waxy substance your body needs to make skin oils, digestive juices, hormones and vitamin D. Your body can make some cholesterol, but you also get it from food. In fact, it’s so abundant in food that most people take in too much of it, which eventually puts them at risk for heart disease and stroke. Lower your cholesterol intake to maintain good health.
What Factors Affect Cholesterol Levels
A variety of factors can affect your cholesterol levels. They include:
- Diet: Saturated fat, trans fat and cholesterol in the food you eat increase cholesterol levels. Try to reduce the amount of saturated fat, trans fat and cholesterol in your diet. This will help lower your blood cholesterol level. Saturated and trans fat have the most impact on blood cholesterol.
- Weight: In addition to being a risk factor for heart disease, being overweight can also increase your triglycerides. Losing weight may help lower your triglyceride levels and raise your HDL.
- Exercise: Regular exercise can lower total cholesterol levels. Exercise has the most effect on lowering triglycerides and raising HDL. You should try to be physically active for 30 minutes on most days of the week.
- Age and sex: As we get older, cholesterol levels rise. Before menopause, women tend to have lower total cholesterol levels than men of the same age. After menopause, however, womens LDL levels tend to rise and HDL can drop.
- Heredity: Your genes partly determine how much cholesterol your body makes. High blood cholesterol can run in families.
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How Do You Prepare For A Cholesterol Test
In most cases, youll need to fast for nine to 12 hours before the test. Make sure you tell the person drawing your blood how long it has been since you ate or drank anything that wasnt water.
There are some cases when a cholesterol test is done without fasting. This is true for tests done at health screenings and may be true for people younger than 20 or for people who are unable to fast.
Some medical societies believe that fasting is not necessary to get a true picture of lipid levels in the blood, while other associations stand by the belief that fasting gives a better idea of a persons heart disease risk. You should be clear on whether or not you need to fast, and for how long, before you go for the blood test.
How Is The Total Cholesterol Or Blood Cholesterol Test Done
A blood test is a routine test. A phlebotomist is a person whose job is to draw blood. Blood is usually drawn from the vein in your arm. You will sit down and the phlebotomist will wrap a rubber band around your upper arm so that the vein in your elbow sticks out. Then they will use a needle to puncture the vein and remove blood. The blood is sent to the lab to be examined.
Youve probably been at health fairs where testing is offered. In that case, the person performing the test takes a drop of blood from your finger. The finger-stick test uses a small blade to poke a hole in the tip of your finger to get the blood.
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How Do You Know Your Cholesterol Level
The first step to reaching a healthy cholesterol level in your body is to know your numbers. Your doctor can order a lab test to check your cholesterol level and then make recommendations from there.
Now lets tackle the latest cholesterol recommendations and how to start incorporating a low-cholesterol diet today.
Which Foods Can Help Lower Cholesterol
The American Heart Association has developed diet guidelines to help lower cholesterol levels. It may be a challenge to read the nutritional contents on food packaging and on restaurant menus or to do the math, but the benefit will decrease the risk of heart attack and stroke.
- Limit total fat intake to less than 25% to 35% of your total calories each day.
- Limit saturated fat intake to less than 7% of total daily calories.
- Limit trans fat intake to less than 1% of total daily calories.
- The remaining fat should come from sources of monounsaturated and polyunsaturated fats that are found in unsalted nuts and seeds, fish and vegetable oils.
- Limit cholesterol intake to less than 300 mg per day, for most people. If you have coronary heart disease or your LDL cholesterol level is 100 mg/dL or greater, limit your cholesterol intake to less than 200 milligrams a day.
Some food groups may be beneficial in directly lowering cholesterol levels and include foods with plant sterol additives, high fiber foods like bran, oatmeal, and fruits like apples and pears, fish, nuts, and olive oil. Some of these foods like nuts and fruits are also high in calories, so moderation is always advisable.
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Firstly What Is Cholesterol
Cholesterol is an essential type of fat that’s carried in the blood.
All cells in the body need cholesterol it’s an essential part of cell walls in our bodies and has important roles, including to produce some hormones, maintain healthy nerve cells and in the synthesis of vitamin D.
Your body needs a small amount of cholesterol to function, but an imbalance between different types of cholesterol in the blood increases the risk of heart disease, one of the leading chronic diseases in Australia today.
About ¾ of the cholesterol in your body is made in the liver and a small amount may come from the food you eat. Various factors affect blood cholesterol levels including your diet and lifestyle, body weight and genes.
Dietary Tips To Avoid Cholesterol
The most important thing you can do to reduce your cholesterol level is to maintain a healthy lifestyle. You should try to:
- Increase the amount and variety of fresh fruit, vegetables and wholegrain foods you have each day.
- Choose low or reduced-fat milk, yoghurt and other dairy products or have added calcium soy drinks.
- Choose lean meat .
- Limit fatty meats, including sausages and salami, and choose leaner sandwich meats like turkey breast or cooked lean chicken.
- Have fish at least twice a week.
- Replace butter and dairy blends with polyunsaturated margarines.
- Include foods in your diet that are rich in soluble fibre and healthy fats, such as nuts, legumes and seeds.
- Limit cheese and ice cream to twice a week.
Other storage fats that are transported in blood lipoproteins include triglycerides. When present in high concentrations in the blood, this fat is also a risk for heart attack. Some foods will affect the cholesterol level or the triglyceride level and some will affect both.
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How Cholesterol Moves Around The Body
Cholesterol is a white, insoluble and waxy substance. It is carried around the body by two key transport systems in the blood, which include:
- Low-density lipoprotein cholesterol carries most of the cholesterol that is delivered to cells. It is called the bad cholesterol because when its level in the bloodstream is high, it can clog up your arteries.
- High-density lipoprotein cholesterol is called the good cholesterol, because it helps remove excess cholesterol out of the cells, including cells in the arteries.
Why Is High Cholesterol Dangerous
Elevated cholesterol levels are one of the risk factors for heart disease, stroke, and peripheral artery disease. The mechanism involving cholesterol in all three diseases is the same plaque buildup within arteries decreases blood flow affecting the function of the cells and organs that these blood vessels supply.
- Atherosclerotic heart disease or narrowed coronary arteries in the heart can cause the symptoms of angina, when the heart muscle is not provided with enough oxygen to function.
- Decreased blood supply to the brain may be due to narrowed small arteries in the brain or because the larger carotid arteries in the neck may become blocked. This can result in a transient ischemic attack or stroke.
- Peripheral artery disease describes gradual narrowing of the arteries that supply the legs. During exercise, if the legs do not get enough blood supply, they can develop pain, called claudication.
- Other arteries in the body may also be affected by plaque buildup causing them to narrow, including the mesenteric arteries to the intestine and the renal arteries to the kidney.
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How Can I Lower Cholesterol With Diet
Heart-healthy lifestyle changes include a diet to lower your cholesterol. The DASH eating plan is one example. Another is the Therapeutic Lifestyle Changes diet, which recommends that you
Choose healthier fats.You should limit both total fat and saturated fat. No more than 25 to 35% of your daily calories should come from dietary fats, and less than 7% of your daily calories should come from saturated fat. Depending upon how many calories you eat per day, here are the maximum amounts of fats that you should eat:
|Calories per Day|
|69-97 grams||17 grams|
Saturated fat is a bad fat because it raises your LDL level more than anything else in your diet. It is found in some meats, dairy products, chocolate, baked goods, and deep-fried and processed foods.
Trans fat is another bad fat it can raise your LDL and lower you HDL . Trans fat is mostly in foods made with hydrogenated oils and fats, such as stick margarine, crackers, and french fries.
Instead of these bad fats, try healthier fats, such as lean meat, nuts, and unsaturated oils like canola, olive, and safflower oils.
Limit foods with cholesterol. If you are trying to lower your cholesterol, you should have less than 200 mg a day of cholesterol. Cholesterol is in foods of animal origin, such as liver and other organ meats, egg yolks, shrimp, and whole milk dairy products.
Eat plenty of soluble fiber. Foods high in soluble fiber help prevent your digestive tract from absorbing cholesterol. These foods include:
Why Is High Cholesterol A Problem
Too much cholesterol in the bloodstream can harden arteries and promote fatty deposits within these arteries, potentially leading to dangerous blockages and narrowing over time called atherosclerosis.
If the blood vessels leading to your heart become too clogged, blood supply to your heart is reduced, which can lead to symptoms such as angina . If the artery becomes completely blocked, it can lead to a heart attack and stroke, which can be life threatening.
In 2017, the Australian Bureau of Statistics reported 43, 477 deaths in Australia from heart disease. This is approximately 30 per cent of all deaths in Australia, and most deaths are occurring in those aged 65 years and over.
However, heart disease takes years to develop, so you can take steps to reduce your risk.If you discover you have high cholesterol, have family members with high cholesterol, or are not sure if you’re at risk, it is advisable you seek your doctor’s advice.
Other risk factors for heart disease include increased age, ethnicity, family history, inactivity, smoking, high blood pressure, type 2 diabetes and obesity.If these risk factors are present in your life, it’s even more important to keep your blood cholesterol levels in check and seek your doctor’s advice.
can help you begin to assess your risk, but we strongly advise you discuss your risk with your GP as this tool does have limitations it doesn’t take your family history into account, for example.
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If Cholesterol Is Necessary Why Do We Have To Worry About How Much We Have
Having enough cholesterol to meet your needs is important. Having too much cholesterol can cause problems. If your cholesterol levels are high, the condition is called hypercholesterolemia. If your cholesterol levels are low, the condition is called hypocholesterolemia. It is not common to have cholesterol levels that are too low, but it can happen.