Everything You Need to Know About Cholesterol

Cholesterol is a fatty substance, one of the types of lipid (lipids are a compound that is not dissolvable), which flows with blood, proteins termed as lipoproteins inside our bodies. Cholesterol is mainly present in animal-based products. There are mainly two types, LDL and HDL. Triglycerides are also a kind of fat present in our bodies.


Total cholesterol (TC) signifies the total cholesterol lipoproteins in the blood. This measurement is not that accurate in evaluating heart-related risks.

Low-Density Lipoprotein (LDL), also termed bad cholesterol. It increases the risk of heart-related diseases if at high levels. The fat forms plaque that fills arteries and causes blockages.

High-Density Lipoprotein (HDL), also termed good cholesterol. It may decrease the risk of heart-related diseases if at high levels. It takes away other kinds of harmful cholesterol (including LDL).

Triglycerides are present in most of the human body, exists as triglycerides. The levels are high in diabetes patients and obese people.

The real task is balancing LDL and HDL levels for a healthy and protected heart. A simple blood test may help you know your cholesterol levels, both LDL and HDL. 

Cholesterol has several crucial roles in the body:  

  • Cholesterol plays a vital role inthe prevention of lowering the temperatures from hindering fluidity.
  • It makes some essential hormones such as testosterone, bile, progesterone, and estrogen.
  • Cholesterol helps in maintaining cell membranes and fabrications, secure amidst fat particles reaching the cell.
  • It is imperative in forming vitamin D in the presence of sunlight.


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Levels for Adults

The total cholesterol healthy levels in adults:  

  • Between 120-200 mg/dL is advisable.
  • Levels between 200-239 mg/dL are borderline high.
  • Higher or equal to 240 mg/dL is considered high.

Low-Density Lipoprotein in adults:

  • Less than 100 mg/dL is advisable.
  • Between 130-159 mg/dL are borderline high.
  • Levels between 160-189 mg/dL are high.

High-Density Lipoprotein in adults:

  • Less than 40 mg/dL is considered risky.
  • 41-59 mg/dL is borderline low.
  •  60 mg/dL or higher is an optimal level.

Triglycerides in adults:

  • Less than 150 mg/dL is considered normal. 
  • Levels between 150-199 mg/dL are borderline high. 
  • Levels between 200-499 mg/dL are considered high.
  • 500 or higher are extremely high.

Levels for Children

Children with health conditions must be carefully examined by a specialist periodically.

The Total cholesterol healthy levels in children:

  • Less than 170 mg/dL is considered normal.
  • Levels between 170-199 mg/dL are held borderline.
  • Levels between 200 mg/dL or higher are considered high.

Low-Density Lipoprotein in children:

  • Less than 110 mg/dL is advisable for a child.
  • Levels between 110-129 mg/dL are borderline high.
  • Levels between 130 mg/dL or higher than that are high.

High-Density Lipoprotein in children:

  • Greater than 45 mg/dL is normal.
  • Levels between 40-45 mg/dL are borderline low.
  • Less than 40 is low and considered risky.

Triglycerides in children:

  • Less than 75 mg/dL is normal.
  • 75-99 mg/dL is borderline high.
  • 100 mg/dL or higher is estimated high.


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Weight. Keep a healthy weight. Being overweight may boost triglycerides (a type of lipid). Weight loss helps triglyceride levels to drop and increase the HDL levels.

Diet. Try avoiding fat, trans fat, and cholesterol in your diet as it increases cholesterol levels. It helps decrease blood cholesterol levels.

Age. Cholesterol levels further increase with age. Menopause tends to raise LDL levels, and HDL levels decline in women. 

Exercise. Exercising may decrease total cholesterol levels. Exercise may lower triglycerides and elevate HDL. 

Blood sugar. Keeping blood pressure in the healthy range is critical in stabilizing cholesterol. 

Smoking. Tobacco decreases HDL cholesterol. It may hasten to a much higher level of LDL or bad cholesterol.


Researches suggest that too low of LDL and too high levels of HDL are not healthy. Low LDL levels may damage hormonal activity and develop the risk of Hypobetalipoproteinemia (impairs the body’s capacity to absorb and transport fats). Also, levels under 40 mg/dL may contain risks, including anxiety, depression, and strokes. Extremely high HDL may not be protective. 

There have been researches that show the possibility between high HDL, cancer, and high cardiovascular risks.


Higher levels of cholesterol may produce severe deposits in the arteries. The plaques reduce blood flow within your arteries, which causes complexities.

Heart attack. Ruptured deposits may cause a blood clot. If blood flow stops reaching some parts of the heart, a heart attack is predetermined.

Chest pain. If coronary arteries are affected due to blockage or some other underlying disease, you may tend to face chest pain.

Stroke. People usually use stroke and heart attack interchangeably. A stroke is caused by blockages.


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