Type

Type

Blood

Blood

Part of

Heart health

Part of

Heart health

Blood biomarker

Total / HDL Cholesterol Ratio

Total / HDL Cholesterol Ratio

Total cholesterol/HDL ratio compares total cholesterol to HDL "good" cholesterol, providing insights into heart disease risk.

Total cholesterol/HDL ratio compares total cholesterol to HDL "good" cholesterol, providing insights into heart disease risk.

Total / HDL Cholesterol Ratio

Normal range

Normal range

<5

<5

Normal range

<5

<5

Normal range

Total / HDL Cholesterol Ratio

Total / HDL Cholesterol Ratio

Total cholesterol/HDL ratio compares total cholesterol to HDL "good" cholesterol, providing insights into heart disease risk.

Total / HDL Cholesterol Ratio

Normal range

<5

Normal range

<5

<5

Normal range

Total / HDL Cholesterol Ratio

Total / HDL Cholesterol Ratio

Total cholesterol/HDL ratio compares total cholesterol to HDL "good" cholesterol, providing insights into heart disease risk.

Total / HDL Cholesterol Ratio

Normal range

<5

Normal range

<5

<5

Normal range

Total / HDL Cholesterol Ratio

Dr. Yiannis Balanos

MBBS MRCGP

The Heart Risk Ratio

The Heart Risk Ratio

The total cholesterol to HDL cholesterol ratio is a powerful predictor of cardiovascular risk that's often more telling than individual cholesterol numbers alone. This ratio reveals the balance between all your cholesterol and your protective HDL cholesterol—essentially comparing your cardiovascular risk factors to your natural defences. 

This ratio is calculated by dividing your total cholesterol by your HDL cholesterol. A lower ratio indicates better cardiovascular health because it means you have more protective HDL cholesterol relative to your total cholesterol burden.

For example, if your total cholesterol is 5.0 mmol/L and your HDL is 1.5 mmol/L, your ratio would be 3.3 - which falls in the optimal range. The same total cholesterol with HDL of 1.0 mmol/L would give a ratio of 5.0, indicating higher risk.

The total cholesterol to HDL cholesterol ratio is a powerful predictor of cardiovascular risk that's often more telling than individual cholesterol numbers alone. This ratio reveals the balance between all your cholesterol and your protective HDL cholesterol—essentially comparing your cardiovascular risk factors to your natural defences. 

This ratio is calculated by dividing your total cholesterol by your HDL cholesterol. A lower ratio indicates better cardiovascular health because it means you have more protective HDL cholesterol relative to your total cholesterol burden.

For example, if your total cholesterol is 5.0 mmol/L and your HDL is 1.5 mmol/L, your ratio would be 3.3 - which falls in the optimal range. The same total cholesterol with HDL of 1.0 mmol/L would give a ratio of 5.0, indicating higher risk.

When Your Ratio Climbs Too High

When Your Ratio Climbs Too High

When Your Ratio Climbs Too High

Discover why an elevated ratio means your cardiovascular clean-up system is overwhelmed and your heart disease risk is significantly increased.

Read more

What Influences Your Cholesterol Ratio

What Influences Your Cholesterol Ratio

What Influences Your Cholesterol Ratio

From exercise to diet, learn the key factors that can dramatically improve or worsen your body's cholesterol balance.

Read more

Helping Your Ratio Naturally

Helping Your Ratio Naturally

Helping Your Ratio Naturally

Understand the most effective strategies to improve your ratio by simultaneously lowering total cholesterol and raising protective HDL.

Read more

Understanding Your Results

Understanding Your Results

Understanding Your Results

Analyse your cholesterol ratio numbers and know exactly what your levels mean for your cardiovascular health.

Read more

When Your Ratio Climbs Too High

High ratios often indicate that your cardiovascular clean-up system (HDL) is outnumbered by the amount of ‘bad’ cholesterol circulating in your bloodstream. This creates an imbalance that increases cardiovascular risk over time. 

A high ratio can exist even when your total cholesterol levels seem reasonable. You might have a total cholesterol of 5.0 mmol/L, which appears acceptable, but if your HDL is only 1.0 mmol/L, your ratio jumps to 5.0—indicating a suboptimal cholesterol profile This is why many doctors consider the ratio a useful tool to interpret cholesterol levels, and it is also used in validated cardiovascular risk score tools, such as the QRISK score. 

High ratios commonly result from lifestyle factors that simultaneously increase total cholesterol and decrease protective HDL: lack of physical activity, excess body weight (especially abdominal fat), smoking, diets high in saturated fats and refined carbohydrates, diabetes, and insulin resistance.

When Your Ratio Climbs Too High

High ratios often indicate that your cardiovascular clean-up system (HDL) is outnumbered by the amount of ‘bad’ cholesterol circulating in your bloodstream. This creates an imbalance that increases cardiovascular risk over time. 

A high ratio can exist even when your total cholesterol levels seem reasonable. You might have a total cholesterol of 5.0 mmol/L, which appears acceptable, but if your HDL is only 1.0 mmol/L, your ratio jumps to 5.0—indicating a suboptimal cholesterol profile This is why many doctors consider the ratio a useful tool to interpret cholesterol levels, and it is also used in validated cardiovascular risk score tools, such as the QRISK score. 

High ratios commonly result from lifestyle factors that simultaneously increase total cholesterol and decrease protective HDL: lack of physical activity, excess body weight (especially abdominal fat), smoking, diets high in saturated fats and refined carbohydrates, diabetes, and insulin resistance.

When Your Ratio Climbs Too High

High ratios often indicate that your cardiovascular clean-up system (HDL) is outnumbered by the amount of ‘bad’ cholesterol circulating in your bloodstream. This creates an imbalance that increases cardiovascular risk over time. 

A high ratio can exist even when your total cholesterol levels seem reasonable. You might have a total cholesterol of 5.0 mmol/L, which appears acceptable, but if your HDL is only 1.0 mmol/L, your ratio jumps to 5.0—indicating a suboptimal cholesterol profile This is why many doctors consider the ratio a useful tool to interpret cholesterol levels, and it is also used in validated cardiovascular risk score tools, such as the QRISK score. 

High ratios commonly result from lifestyle factors that simultaneously increase total cholesterol and decrease protective HDL: lack of physical activity, excess body weight (especially abdominal fat), smoking, diets high in saturated fats and refined carbohydrates, diabetes, and insulin resistance.

What Influences Your Cholesterol Ratio 

Your ratio can worsen through several interconnected factors. Lack of physical activity lowers HDL whilst allowing total cholesterol to rise, creating a double negative effect on your ratio. Excess body weight, particularly abdominal fat, raises total cholesterol whilst suppressing HDL production. Smoking significantly reduces HDL levels, potentially worsening your ratio even if total cholesterol remains stable.

Dietary factors play a crucial role. Diets high in saturated fats and refined carbohydrates can increase total cholesterol whilst providing little support for HDL cholesterol. Diabetes and insulin resistance create metabolic conditions that favour higher total cholesterol and lower HDL levels.

Conversely, your ratio improves through lifestyle changes that work on both sides of the equation. Regular exercise has a large impact, simultaneously lowering total cholesterol and raising HDL levels. Weight loss, if you’re overweight, can improve cholesterol balance. Quitting smoking, if you smoke, allows HDL levels  to improve within weeks.

What Influences Your Cholesterol Ratio 

Your ratio can worsen through several interconnected factors. Lack of physical activity lowers HDL whilst allowing total cholesterol to rise, creating a double negative effect on your ratio. Excess body weight, particularly abdominal fat, raises total cholesterol whilst suppressing HDL production. Smoking significantly reduces HDL levels, potentially worsening your ratio even if total cholesterol remains stable.

Dietary factors play a crucial role. Diets high in saturated fats and refined carbohydrates can increase total cholesterol whilst providing little support for HDL cholesterol. Diabetes and insulin resistance create metabolic conditions that favour higher total cholesterol and lower HDL levels.

Conversely, your ratio improves through lifestyle changes that work on both sides of the equation. Regular exercise has a large impact, simultaneously lowering total cholesterol and raising HDL levels. Weight loss, if you’re overweight, can improve cholesterol balance. Quitting smoking, if you smoke, allows HDL levels  to improve within weeks.

What Influences Your Cholesterol Ratio 

Your ratio can worsen through several interconnected factors. Lack of physical activity lowers HDL whilst allowing total cholesterol to rise, creating a double negative effect on your ratio. Excess body weight, particularly abdominal fat, raises total cholesterol whilst suppressing HDL production. Smoking significantly reduces HDL levels, potentially worsening your ratio even if total cholesterol remains stable.

Dietary factors play a crucial role. Diets high in saturated fats and refined carbohydrates can increase total cholesterol whilst providing little support for HDL cholesterol. Diabetes and insulin resistance create metabolic conditions that favour higher total cholesterol and lower HDL levels.

Conversely, your ratio improves through lifestyle changes that work on both sides of the equation. Regular exercise has a large impact, simultaneously lowering total cholesterol and raising HDL levels. Weight loss, if you’re overweight, can improve cholesterol balance. Quitting smoking, if you smoke, allows HDL levels  to improve within weeks.

Helping Your Ratio Naturally 

The most effective approach focuses on strategies that simultaneously improve both sides of your cholesterol balance. Exercise stands out as the single most powerful intervention—regular aerobic activity can improve HDL whilst lowering total cholesterol, improving your ratio.

Weight management through balanced nutrition and portion control addresses multiple risk factors simultaneously. Even modest weight loss can significantly improve your cholesterol profile, if you are overweight. 

Dietary modifications emphasising foods that support HDL whilst limiting cholesterol increases can help: Omega-3 rich fish, healthy fats like from olive oil and avocados, and soluble fibre from oats, beans, and fruits. Limit saturated fats and eliminate trans fats, which worsen the ratio by raising total cholesterol and lowering HDL.

Helping Your Ratio Naturally 

The most effective approach focuses on strategies that simultaneously improve both sides of your cholesterol balance. Exercise stands out as the single most powerful intervention—regular aerobic activity can improve HDL whilst lowering total cholesterol, improving your ratio.

Weight management through balanced nutrition and portion control addresses multiple risk factors simultaneously. Even modest weight loss can significantly improve your cholesterol profile, if you are overweight. 

Dietary modifications emphasising foods that support HDL whilst limiting cholesterol increases can help: Omega-3 rich fish, healthy fats like from olive oil and avocados, and soluble fibre from oats, beans, and fruits. Limit saturated fats and eliminate trans fats, which worsen the ratio by raising total cholesterol and lowering HDL.

Helping Your Ratio Naturally 

The most effective approach focuses on strategies that simultaneously improve both sides of your cholesterol balance. Exercise stands out as the single most powerful intervention—regular aerobic activity can improve HDL whilst lowering total cholesterol, improving your ratio.

Weight management through balanced nutrition and portion control addresses multiple risk factors simultaneously. Even modest weight loss can significantly improve your cholesterol profile, if you are overweight. 

Dietary modifications emphasising foods that support HDL whilst limiting cholesterol increases can help: Omega-3 rich fish, healthy fats like from olive oil and avocados, and soluble fibre from oats, beans, and fruits. Limit saturated fats and eliminate trans fats, which worsen the ratio by raising total cholesterol and lowering HDL.

Understanding Your Results 

Your cholesterol ratio is calculated by dividing total cholesterol by HDL cholesterol. For example, if your total cholesterol is 5.0 mmol/L and your HDL is 1.5 mmol/L, your ratio would be 3.3.


  • Optimal: ≤3.5 

  • Normal: ≤5.0 

  • High: >5.0


A ratio above 5.0 indicates your protective HDL is significantly outmatched by your cholesterol burden, whilst an optimal ratio below 3.5 suggests a better overall balance.

The ratio is most meaningful when evaluated alongside other cardiovascular risk factors and your full cholesterol profile.

Understanding Your Results 

Your cholesterol ratio is calculated by dividing total cholesterol by HDL cholesterol. For example, if your total cholesterol is 5.0 mmol/L and your HDL is 1.5 mmol/L, your ratio would be 3.3.


  • Optimal: ≤3.5 

  • Normal: ≤5.0 

  • High: >5.0


A ratio above 5.0 indicates your protective HDL is significantly outmatched by your cholesterol burden, whilst an optimal ratio below 3.5 suggests a better overall balance.

The ratio is most meaningful when evaluated alongside other cardiovascular risk factors and your full cholesterol profile.

Understanding Your Results 

Your cholesterol ratio is calculated by dividing total cholesterol by HDL cholesterol. For example, if your total cholesterol is 5.0 mmol/L and your HDL is 1.5 mmol/L, your ratio would be 3.3.


  • Optimal: ≤3.5 

  • Normal: ≤5.0 

  • High: >5.0


A ratio above 5.0 indicates your protective HDL is significantly outmatched by your cholesterol burden, whilst an optimal ratio below 3.5 suggests a better overall balance.

The ratio is most meaningful when evaluated alongside other cardiovascular risk factors and your full cholesterol profile.

The Takeaway

Your cholesterol ratio provides a snapshot of your cardiovascular risk balance, revealing overall ‘cholesterol burden’ against your protective HDL cholesterol. Unlike individual cholesterol measurements, the ratio captures a dynamic relationship.

The encouraging news is that lifestyle changes—particularly regular exercise—can improve your ratio. Focus on strategies that address both sides of the equation: lowering total cholesterol whilst raising protective HDL for maximum cardiovascular benefit.

Don't overlook this powerful predictor when reviewing your lipid panel. This ratio can better inform cardiovascular risk even when individual cholesterol levels may seem borderline or do not give the full context, making it a useful tool for understanding your cholesterol profile.

The Takeaway

Your cholesterol ratio provides a snapshot of your cardiovascular risk balance, revealing overall ‘cholesterol burden’ against your protective HDL cholesterol. Unlike individual cholesterol measurements, the ratio captures a dynamic relationship.

The encouraging news is that lifestyle changes—particularly regular exercise—can improve your ratio. Focus on strategies that address both sides of the equation: lowering total cholesterol whilst raising protective HDL for maximum cardiovascular benefit.

Don't overlook this powerful predictor when reviewing your lipid panel. This ratio can better inform cardiovascular risk even when individual cholesterol levels may seem borderline or do not give the full context, making it a useful tool for understanding your cholesterol profile.

The Takeaway

Your cholesterol ratio provides a snapshot of your cardiovascular risk balance, revealing overall ‘cholesterol burden’ against your protective HDL cholesterol. Unlike individual cholesterol measurements, the ratio captures a dynamic relationship.

The encouraging news is that lifestyle changes—particularly regular exercise—can improve your ratio. Focus on strategies that address both sides of the equation: lowering total cholesterol whilst raising protective HDL for maximum cardiovascular benefit.

Don't overlook this powerful predictor when reviewing your lipid panel. This ratio can better inform cardiovascular risk even when individual cholesterol levels may seem borderline or do not give the full context, making it a useful tool for understanding your cholesterol profile.

References

  1. British Heart Foundation. (2023). Cholesterol ratios and cardiovascular risk assessment: Clinical guidelines and management strategies.

  2. National Institute for Health and Care Excellence. (2023). Cardiovascular disease: risk assessment and reduction, including lipid modification. NICE guideline [CG181].

  3. Lloyd-Jones, D. M., Morris, P. B., Ballantyne, C. M., et al. (2017). 2016 ACC expert consensus decision pathway on the role of non-statin therapies. Journal of the American College of Cardiology, 68(1), 92-125.

  4. Castelli, W. P., Garrison, R. J., Wilson, P. W., et al. (1986). Incidence of coronary heart disease and lipoprotein cholesterol levels: The Framingham Study. JAMA, 256(20), 2835-2838.

References

  1. British Heart Foundation. (2023). Cholesterol ratios and cardiovascular risk assessment: Clinical guidelines and management strategies.

  2. National Institute for Health and Care Excellence. (2023). Cardiovascular disease: risk assessment and reduction, including lipid modification. NICE guideline [CG181].

  3. Lloyd-Jones, D. M., Morris, P. B., Ballantyne, C. M., et al. (2017). 2016 ACC expert consensus decision pathway on the role of non-statin therapies. Journal of the American College of Cardiology, 68(1), 92-125.

  4. Castelli, W. P., Garrison, R. J., Wilson, P. W., et al. (1986). Incidence of coronary heart disease and lipoprotein cholesterol levels: The Framingham Study. JAMA, 256(20), 2835-2838.

References

  1. British Heart Foundation. (2023). Cholesterol ratios and cardiovascular risk assessment: Clinical guidelines and management strategies.

  2. National Institute for Health and Care Excellence. (2023). Cardiovascular disease: risk assessment and reduction, including lipid modification. NICE guideline [CG181].

  3. Lloyd-Jones, D. M., Morris, P. B., Ballantyne, C. M., et al. (2017). 2016 ACC expert consensus decision pathway on the role of non-statin therapies. Journal of the American College of Cardiology, 68(1), 92-125.

  4. Castelli, W. P., Garrison, R. J., Wilson, P. W., et al. (1986). Incidence of coronary heart disease and lipoprotein cholesterol levels: The Framingham Study. JAMA, 256(20), 2835-2838.

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© 2025 Emerald Labs Ltd