What foods lower cholesterol?
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Two changes do the most. Swap butter, fatty meat and cheese for vegetable or olive oils, and add soluble fiber: 10 g of psyllium a day took LDL down about 13 mg/dL in 28 trials. Oats, beans, soy and nuts each help a bit more.
What we’d do
Start with two changes, not twenty. Make the fat swap and add psyllium, then fill in with oats, beans, soy and nuts as you like them. Skip the supplement aisle. In a 28-day trial, six popular cholesterol supplements did no better than a sugar pill.
Why the usual lists don’t help
Most “foods that lower cholesterol” lists give you twenty items and no sizes, so garlic sits next to oatmeal as if they did the same thing. Here’s what each change did in trials, in points of LDL.
| Change | LDL, in trials | Evidence |
|---|---|---|
| 10 g of psyllium husk a day | about 13 lower | 28 trials, 1,924 people |
| 5% of calories moved from saturated fat to vegetable oils (about 11 g a day) | about 11 lower | 69 feeding trials |
| Vegetarian or vegan eating, against eating meat | about 12 lower | pooled trials in the guideline |
| Plant protein in place of meat | about 8 lower | pooled trials in the guideline |
| About 3.5 g of oat beta-glucan a day | about 7 lower | 58 trials, 3,974 people |
| A serving of nuts a day | about 5 lower | pooled studies in the guideline |
Trials tested these one at a time. Together they usually add up to less than the sum, and nobody has measured how much less.
How the two big ones work
Your liver pulls LDL out of your blood through receptors on its cells, like a drain. It also uses cholesterol to make bile, which it sends into your gut to help digest fat.
Soluble fiber, like psyllium and the beta-glucan in oats, thickens into a gel in your gut. In hamsters fed psyllium, the liver’s enzyme that turns cholesterol into bile became 3 to 4 times more active, and the cholesterol stored in the liver fell. A cholesterol drug that traps bile in the gut did the same thing. Scientists haven’t pinned down every step in people, but the trials show the result. Saturated fat works the other way and raises LDL, and swapping it for unsaturated fat brings LDL down.
The month that matched a statin
In 2003, researchers in Canada put 46 adults with high cholesterol on one of three diets for a month. A diet very low in saturated fat lowered LDL 8.0%. The same diet plus a starter statin lowered it 30.9%. A diet built on soy protein, almonds, viscous fiber and a margarine with added plant sterols, called the portfolio diet, lowered it 28.6%, and the difference from the statin was too small to call. It was one month and 46 people, but it shows how far food can go when you stack it.
What doesn’t work
The plant sterols in that margarine were food. The pills are a different story. In the SPORT trial in 2023, 190 adults took a 5 mg statin, a placebo, or fish oil, cinnamon, garlic, turmeric, plant sterols or red yeast rice for 28 days. The statin lowered LDL 35% more than placebo. None of the six supplements did better than placebo. The 2026 guideline recommends against supplements for lowering cholesterol.
The full plan, week by week, is in how to lower your cholesterol, and What would lower yours? puts each change against your own LDL.
8 sources
- Mensink RP, Effects of saturated fatty acids on serum lipids and lipoproteins, World Health Organization, 2016, as tabulated by Food Standards Australia New Zealandfoodstandards.gov.au
- Jovanovski E and others, Effect of psyllium fiber on LDL cholesterol and alternative lipid targets, non-HDL cholesterol and apolipoprotein B, American Journal of Clinical Nutrition, 2018pubmed.ncbi.nlm.nih.gov
- Ho HV and others, The effect of oat beta-glucan on LDL-cholesterol, non-HDL-cholesterol and apoB for CVD risk reduction, British Journal of Nutrition, 2016pubmed.ncbi.nlm.nih.gov
- Blumenthal RS, Morris PB, Gaudino M and others, 2026 ACC/AHA guideline on the management of dyslipidemia, JACC, 2026doi.org
- The same guideline, full text, Circulation, 2026api.iscpcardio.org
- Jenkins DJ and others, Effects of a dietary portfolio of cholesterol-lowering foods vs lovastatin on serum lipids and C-reactive protein, JAMA, 2003pubmed.ncbi.nlm.nih.gov
- Laffin LJ and others, Comparative effects of low-dose rosuvastatin, placebo, and dietary supplements on lipids and inflammatory biomarkers, Journal of the American College of Cardiology, 2023pubmed.ncbi.nlm.nih.gov
- Horton JD, Cuthbert JA and Spady DK, Regulation of hepatic 7 alpha-hydroxylase expression by dietary psyllium in the hamster, Journal of Clinical Investigation, 1994pubmed.ncbi.nlm.nih.gov
