How To Cleanup Cholesterol

This article explores natural ways to manage high LDL cholesterol. It likens high LDL to blocked streets and offers dietary and lifestyle "bouncers" to help reduce these levels. Learn how fibre, plant sterols, garlic, and exercise can contribute.

How To Cleanup Cholesterol

Summary

1

How does fibre help lower LDL cholesterol?

Soluble fibre binds to cholesterol in the digestive system, preventing its absorption. Psyllium husks and beta-glucan (found in oats and barley) are particularly effective at reducing LDL and total cholesterol.

2

What are plant sterols, and how do they reduce cholesterol?

Plant sterols resemble human cholesterol and compete for absorption spots in the gut, reducing actual cholesterol absorption. Aiming for 1.5–3.0g daily can significantly lower cholesterol levels.

3

Can garlic contribute to lowering cholesterol?

Yes – garlic contains sulphur-containing compounds like allicin. Research suggests consistent garlic intake can reduce total cholesterol by about 17 points and LDL by approximately 9 points.

4

How does exercise influence cholesterol, particularly HDL?

Aerobic exercise improves the quality and functionality of HDL (“good” cholesterol). Even low-intensity movements like Tai Chi can positively impact blood lipid profiles and overall heart health.

So, your latest blood work came back, and the LDL (low-density lipoprotein) numbers are looking a bit more “ambitious” than you’d like. While cholesterol is essential for building cell membranes and hormones – think of it as the construction material for your body’s skyscraper – having too much LDL is like having a delivery crew that keeps dropping off bricks on the sidewalk until the street is blocked.

According to the NHS, below are the healthy levels for different types of cholesterol (1):

Result Healthy level
Total cholesterol (the overall amount of cholesterol in your blood) Below 5mmol/L
HDL (good cholesterol) Above 1.0mmol/L for men or above 1.2mmol/L for women
Non-HDL (bad cholesterol) Below 4mmol/L

The good news? You don’t always need a prescription to start the eviction process. Science suggests that with the right dietary and lifestyle “bouncers,” you can manage those levels naturally.

1. Does Fibre Help Lower Cholesterol?

If LDL is the unwanted guest, soluble fibre is the security guard that escorts it out of the building. Soluble fibre binds to cholesterol in the digestive system and drags it out before it can hit your bloodstream.

  • Psyllium Husks: This isn’t just for your grandmother. Recent meta-analyses of 41 randomised controlled trials involving over 2,000 participants confirm that psyllium supplementation significantly decreases LDL and total cholesterol (2).
  • Beta-Glucan: Found in oats and barley, this specific type of fibre creates a gel-like substance that lowers “bad” cholesterol absorption (3). According to Heart UK, a daily intake of 3g of beta-glucans can have cholesterol-lowering benefits. By eating three servings of the following foods each day, you’ll hit that target (4):
    • A bowl of porridge (30g porridge oats)
    • 250ml oat milk (providing at least 1g of beta-glucans per serving)
    • 3 oat cakes
    • 75g cooked pearl barley

2. Do Plant Sterols Help Cholesterol?

Think of plant sterols (phytosterols) as cholesterol’s doppelgängers. Naturally found in plant foods like vegetable oils, nuts, seeds, fruits, and vegetables, they look so much like human cholesterol that they compete for the same absorption spots in your gut. When you eat enough of them, plant sterols “clog” the absorption receptors, leaving the actual cholesterol with nowhere to go but… out.

Research published in Phytotherapy Research indicates that dietary phytosterol intake significantly reduces both total cholesterol and LDL levels. Aim for roughly 1.5 to 3.0 grams per day to see an effect (5). Not hitting the dietary sweet spot? Supplements can contribute to your daily intake.

3. Can Garlic Lower Cholesterol?

No evidence-based guide would be complete without mentioning garlic (Allium sativum L.). Beyond its legendary ability to keep vampires and first dates at bay, garlic contains sulphur-containing compounds like allicin which can help lower “bad” cholesterol: if you have high cholesterol (above 200 mg/dL), taking garlic for more than two months can reduce your total cholesterol by about 17 points and your LDL by about 9 points (6).

4. Are Saturated Fats Bad For Cholesterol?

Your body doesn’t just get cholesterol from food; it manufactures it based on the fats you eat. Saturated fats (found in butter and fatty meats) tell your liver to ramp up production. Monounsaturated fats (olive oil, avocados) and polyunsaturated fats (walnuts, flaxseeds) tell it to chill out.

5. Will Exercise Help Lower Cholesterol?

Exercise isn’t just about fitting into your 18-year-old jeans; it’s a biochemical tune-up. While high-intensity workouts are great for burning calories, aerobic exercise (walking, swimming, cycling) is specifically linked to improving the quality and functionality of your HDL (the “good” cholesterol) (8).

Pro Tip: Even low-intensity movement like Tai Chi improves blood lipid profiles (9).

Key Takeaways

  1. Dietary Powerhouses: Soluble fibre (psyllium, beta-glucans) and plant sterols effectively lower bad cholesterol by blocking its absorption, while garlic also offers significant cholesterol-reducing benefits.
  2. Smart Fat Choices: Opt for monounsaturated and polyunsaturated fats (like Omega-3) over saturated fats, as your body uses these fats to regulate cholesterol production.
  3. Exercise for Good Cholesterol: Regular aerobic exercise is crucial for improving the quality and function of your “good” HDL cholesterol, directly benefiting your heart health.

If you would like to discuss supplements to support healthy cholesterol levels, contact our team of expert Nutrition Advisors.

Disclaimer: This article offers informational advice and is not a substitute for professional medical care. While we strive for accuracy and up-to-date information, always consult your GP or healthcare professional before using supplements or alternative products, especially if you have existing medical conditions or are under medical supervision.

References:

  1. NHS (2022). Cholesterol Levels – High Cholesterol. https://www.nhs.uk/conditions/high-cholesterol/cholesterol-levels/
  2. Psyllium supplementation and lipid profiles: systematic review and dose-response meta-analysis of randomized controlled trials. (2025). PMC – NIH. https://pmc.ncbi.nlm.nih.gov/articles/PMC12690803/
  3. Ho HVT, Sievenpiper JL, et al. (2016). The effect of oat β-glucan on LDL-cholesterol, non-HDL-cholesterol and apoB for CVD risk reduction. British Journal of Nutrition, 116(8), pp.1369–1382. https://doi.org/10.1017/s000711451600341x
  4. Heart UK (2023). Oats & Barley. https://www.heartuk.org.uk/step-4-eat-and-live-smart/cholesterol-smart-oats
  5. Yang Y, et al. (2024). Effects of phytosterols on cardiovascular risk factors. Phytotherapy Research, 39(1), 3–24. https://onlinelibrary.wiley.com/doi/10.1002/ptr.8308
  6. NIH. Effect of garlic on serum lipids: an updated meta-analysis. https://www.ncbi.nlm.nih.gov/books/NBK133572/
  7. Wang W, et al. (2025). Effects of omega-3 fatty acids supplementation on lipids and pregnancy outcomes. J Matern Fetal Neonatal Med, 38(1). https://doi.org/10.1080/14767058.2025.2536177
  8. Franczyk B, et al. (2023). The Impact of Aerobic Exercise on HDL Quantity and Quality. Int J Mol Sci, 24(5), 4653. https://doi.org/10.3390/ijms24054653
  9. Pan X, et al. (2016). Effect of Tai Chi exercise on blood lipid profiles: a meta-analysis. Journal of Zhejiang University-SCIENCE B, 17(8), pp.640–648. https://doi.org/10.1631/jzus.b1600052
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