What is Cholesterol?

CHOLESTEROL INFORMATION & DIET ADVICE 

Cholesterol itself isn’t bad. In fact, cholesterol is just one of the many substances created and used by our bodies to keep us healthy. It is a fatty substance known as lipid. Some of the cholesterol we need is produced naturally mainly by the liver (and can be affected by your family health history), while some of it comes from the food we eat. Cholesterol is only found in animal products. There are two types of cholesterol: “good” and “bad.” It’s important to understand the difference, and to know the levels of “good” and “bad” cholesterol in your blood. Too much of one type — or not enough of another — can put you at risk for coronary heart disease, heart attack or stroke. 

A cholesterol screening measures your level of HDL and LDL.  HDL is the “good” cholesterol which helps keep the LDL “bad” cholesterol from getting lodged into your artery walls.  A healthy level of HDL may also protect against heart attack and stroke, while low levels of HDL (less than 40 mg/dL for men and less than 50 mg/dL for women) have been shown to increase the risk of heart disease 

When should I test my cholesterol levels? 

Your GP may recommend that you have your blood cholesterol levels tested if you: 

  • are over 40  
  • have a family history of early cardiovascular disease  
  • have a close family member with a cholesterol-related condition  
  • are overweight  
  • have high blood pressure, diabetes or a health condition that can increase cholesterol levels, such as an underactive thyroid  

 

What causes high cholesterol?  

Lifestyle causes  

  • Nutrition – although some foods contain cholesterol, such as eggs, kidneys and some seafood, dietary cholesterol does not have much of an impact in human blood cholesterol levels. However, saturated fats do! Foods high in saturated fats include red meat, some pies, sausages, hard cheese, lard, pastry, cakes, most biscuits, and cream (there are many more).  
  • Sedentary lifestyle – people who do not exercise and spend most of their time sitting/lying down have significantly higher levels of LDL (bad cholesterol) and lower levels of HDL (good cholesterol).  
  • Bodyweight – people who are overweight/obese are much more likely to have higher LDL levels and lower HDL levels, compared to people who are of normal weight.  
  • Smoking – this can have quite a considerable effect on LDL levels.  
  • Alcohol – people who consume too much alcohol regularly, generally have much higher levels of LDL and much lower levels of HDL, compared to people who abstain or those who drink in moderation.  
 

How to increase the levels of good Cholesterol (HDL)  

  • Regular physical activity can help your body produce more HDLs.  
  • Reducing TRANS fat and eating a balanced and nutritious diet is another way to increase your HDL.   
  • If these measures are not enough to increase your HDL to goal, your healthcare practitioner may prescribe a medication specifically to increase your HDLs. 

 

How to keep levels of bad cholesterol (LDL) to acceptable levels 

LDL cholesterol is produced naturally by the body, but many people inherit genes from their mother, father or even grandparents that cause them to make too much. You can control the levels of LDL in the blood by reducing the intake of saturated fat, TRANS fats and dietary cholesterol. If high blood cholesterol runs in your family, lifestyle modifications may not be enough to help lower your LDL blood cholesterol. Everyone is different, so it is important to find a treatment plan that’s best for you. 

Why is it important to keep control of cholesterol levels in the body? 

High cholesterol is one of the major controllable risk factors for coronary heart disease, heart attack and stroke. As your blood cholesterol rises, so does your risk of coronary heart disease. If you have other risk factors (such as high blood pressure or diabetes) as well as high cholesterol, this risk increases even more. The more risk factors you have, the greater your chance of developing coronary heart disease. Also, the greater the level of each risk factor, the more that factor affects your overall risk. Your cholesterol level can be affected by your age, gender, family health history and diet.  

What are the dangers of high cholesterol level? 

High cholesterol levels can cause: 

  • Atherosclerosis – narrowing of the arteries.  
  • Higher coronary heart disease risk – an abnormality of the arteries that supply blood and oxygen to the heart. Your risk of coronary heart disease (when your heart’s blood supply is blocked or disrupted) also rises as your blood’s cholesterol level increases and this can cause angina during physical activity. 
  • Heart attack – occurs when the supply of blood and oxygen to an area of heart muscle is blocked, usually by a clot in a coronary artery. This causes your heart muscle to die.  
  • Angina – chest pain or discomfort that occurs when your heart muscle does not get enough blood.  
  • Other cardiovascular conditions – diseases of the heart and blood vessels.  
  • Stroke and mini-stroke – occurs when a blood clot blocks an artery or vein, interrupting the flow to an area of the brain. Can also occur when a blood vessel breaks. Brain cells begin to diet. This is because cholesterol can build up in the artery wall, restricting the flow of blood to your heart, brain and the rest of your body. It also increases the chance of a blood clot developing somewhere. 

 

Recommendations: 

A good way to reduce Cholesterol levels is to consume more fiber in your diet and to lose weight. Therefore, a well-balanced diet is crucial to maintain a healthy heart.  Below is a high fiber, low fat menu suggestion to give you an idea on how delicious it can be: 

  • Breakfast  
  • 1 cup of whole grain oat cereal 
  • 1 cup of skim milk 
  • 1 slice of whole-wheat bread 
  • 1 banana 

 

  • Morning Snack  
  • 1 cinnamon raisin bagel, 1/2 ounce light cream cheese 
 
  • Lunch  
  • Turkey sandwich (3 ounces of turkey) on rye bread with lettuce 
  • 1 orange 
  • 25g of raisins 
  • 1 cup of skim milk 

 

  • Snack  
  • Fat free yogurt with fruit 

 

  • Dinner  
  • 3 ounces of broiled chicken breast 
  • 1 medium baked potato 
  • 1 tablespoon of fat free yogurt 
  • 1/2 cup of broccoli 
  • 1 bread roll 
  • 1 cup of skim milk 

 

Some important organisations (sources): 

British Heart Foundation Heart information line: 08450 708070   www.bhf.org.uk 

Heart UK telephone: 01628 628638   www.heartuk.org.uk 

I hope this information helps you towards a change in your dietary habits. It is easier than you think to lead a healthy happy life style. 

With best wishes,  

Dr Milton Maltz MD, M.Phil 

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