Bergamot: A Citrus Extract That Lowers Cholesterol and Triglycerides

Every few years, a spice or fruit we have eaten for centuries is discovered to harbor a molecule with real pharmaceutical effects. Bergamot is exactly that. This citrus fruit, grown almost exclusively in the Calabria region of southern Italy, is known to most of us only as the aroma that gives Earl Grey tea its characteristic flavor. But in the last decade, its peel extract has become one of the most researched supplements in the world of natural cardiology.

The reason is simple: Bergamot contains unique polyphenols that lower cholesterol and triglycerides through a mechanism strikingly similar to that of statins, but with moderate potency. For millions of people with mild to moderate elevation of blood lipids, who do not yet need a full drug but also cannot ignore the numbers, bergamot offers an interesting middle ground. In this article, we will examine what the research really shows, and what it does not show.

What is Bergamot?

Bergamot (Citrus bergamia) is a citrus fruit the size of a small orange, yellow-green, too sour for direct consumption. The supplement is not made from the juice but from a concentrated extract of the polyphenols in the peel and pulp. Here is what is important to know about it:

• The active ingredient is a package of flavonoids: mainly neohesperidin, naringin, and neoeriocitrin, along with two rare molecules, brutieridin and melitidin.
• Brutieridin and melitidin are the stars: These two molecules are almost unique to bergamot, and they have a chemical structure similar to statins.
• The supplement is measured by flavonoid content: Clinical preparations usually contain 150 mg of standardized flavonoids, or 500-1000 mg of raw extract.
• Different interaction profile from grapefruit: Purified polyphenol extracts of bergamot are generally low in furanocoumarins, and therefore likely carry less risk of interaction with the CYP3A4 enzyme compared to grapefruit juice, but this is not guaranteed, and anyone taking medications metabolized by CYP3A4 should consult a doctor or pharmacist.

The Connection to the Heart: A Mechanism Reminiscent of Statins

To understand why bergamot is so interesting, one must know the enzyme HMG-CoA reductase. This is the enzyme the liver uses to produce cholesterol, and it is precisely the enzyme that all statins in the world are designed to block. The brutieridin and melitidin in bergamot inhibit the same enzyme, only with much weaker potency than a drug.

But bergamot does more than that. It also acts on a second enzyme called ACAT, responsible for cholesterol absorption and conversion to storage, and also activates the AMPK pathway, the metabolic switch that improves fat burning in cells. This combination explains why bergamot affects triglycerides as well, not just cholesterol, something statins do less well.

A critical point: Studies have shown that bergamot changes the quality of LDL particles, not just the quantity. It particularly reduces small, dense LDL particles, those considered most harmful to arteries. This is a benefit that the total cholesterol number in a blood test does not reveal at all.

Current Evidence

Study 1: Mollace et al., 2011

The study that put bergamot on the map. An Italian team recruited 237 patients with high cholesterol and gave them 500 mg of bergamot polyphenol extract daily for only 30 days. The results were dramatic: a reduction of 21.8% in total cholesterol, 24.1% in LDL, and 30.5% in triglycerides. In a subgroup with metabolic syndrome, triglycerides dropped by 41% and blood sugar by 19% (at the higher dose of 1000 mg daily, blood sugar dropped by about 22%). These are exceptional numbers for a natural supplement in one month.

Study 2: Toth and Rizzo, 2016

A long-term prospective study published in Frontiers in Pharmacology. 80 subjects with moderate hypercholesterolemia received 150 mg of standardized flavonoids daily for a full 6 months. The results: a reduction of 12% in total cholesterol, 20% in LDL, and 17% in triglycerides. But the most impressive finding was another: carotid artery intima-media thickness (cIMT) decreased by 25%, and the smallest, densest LDL particles dropped by 38% to 67%. This is proof that bergamot does not just change numbers but affects the atherosclerotic process itself.

Study 3: Foods Trial, 2024

A randomized, double-blind, placebo-controlled trial, one of the most recent available. 64 subjects received 150 mg of bergamot flavonoids daily for 4 months. The results were more modest than previous studies but still significant: a reduction of 8.8% in total cholesterol and 11.5% in LDL, along with a 5.5% increase in good HDL and a decrease in oxidized LDL. The gap between the impressive numbers of 2011 and the modest ones of 2024 is exactly what should interest us, and we will return to it later.

What About Combining Bergamot and Statins?

A question that often arises: if bergamot acts like a weak statin, can they be combined? An interesting study examined exactly this and showed that adding bergamot to rosuvastatin enhanced the effect on LDL beyond what the drug achieved alone. The logic: the two pathways complement each other. Bergamot also reduced the expression of the LOX-1 receptor, involved in arterial damage.

The practical implication: for people taking a low dose of a statin but still not reaching their target, or those suffering from muscle pain at a higher dose, adding bergamot may allow for a better result with a lower drug dose. But this is a step that must be done under a doctor's supervision, not alone.

Should We Start Taking Bergamot?

Here, our rating becomes yellow, not green, despite the impressive numbers. Here are caveats that must be known:

• Inconsistency between studies: While the 2011 study showed a 24% reduction in LDL, the 2024 study showed only 11.5%. This variability stems from differences in preparations, dosages, and populations. Bergamot works, but not always with the promised potency.
• Quality of preparations varies greatly: The market is flooded with bergamot extracts of unknown polyphenol content. A supplement not standardized for flavonoid content may be worthless.
• Not a substitute for a statin in high risk: Anyone who has had a cardiac event, has diabetes with high LDL, or has high cardiovascular risk, needs the potency of a real drug. Bergamot is not strong enough for that.
• Limited long-term safety data: Most studies lasted one to six months. The effect of years of use is not deeply known.
• Mild side effects: Heartburn, citrus-flavored burps, and sometimes abdominal discomfort. Rare, but existent.

At a cost of about 80-150 NIS per month, bergamot is a reasonable supplement for the right candidate. But the last words are 'the right candidate,' not everyone.

What to Take Away from the Research?

1. If your cholesterol is borderline-high and you are not at high risk: Bergamot is a reasonable attempt before medication. Talk to your doctor, start with 500 mg daily, and check blood lipids after 3 months. An effective dose ranges from 500 to 1000 mg per day.
2. Choose a standardized preparation: Look for an extract that specifies the flavonoid content (usually 150 mg) or a standard ratio. Purchase bergamot on iHerb.
3. If you are already on a statin: Do not stop it on your own. Combining bergamot is an option, but only in coordination with your doctor and with blood test monitoring.
4. Do not neglect the basics: Bergamot is not a substitute for a diet low in refined sugars, physical activity, and weight loss. These are still the most powerful tools for lowering triglycerides.
5. Measure, do not guess: The real benefit of bergamot is measured in a blood test, not a feeling. If there is no improvement after 3 months, it is probably not working for you.

Want to know which supplements are suitable for your specific heart and health goals? Try our personal supplement selector and get a tailored list ranked by level of evidence.

The Broader Perspective

Bergamot is an excellent example of a rule that repeats itself again and again in the supplement world: A natural solution can be real and research-based, and still not be the magic solution that marketers promise. It really does lower cholesterol. It really does improve the quality of LDL particles. It really is relatively safe. But it is also dependent on the quality of the preparation, moderate in potency, and not suitable for every situation.

The right way to think about bergamot is not as an alternative to medicine, but as a complementary tool in the toolbox. For mild elevations in blood lipids, it can be the difference between delaying a drug and starting one. For high risk, it is an adjunct, not a replacement. As always in longevity, the smart decision is not 'supplement or drug,' but 'what do my numbers say, and what is the right tool for my situation.'

References:
Toth PP, Patti AM, Nikolic D, et al. Bergamot Reduces Plasma Lipids, Atherogenic Small Dense LDL, and Subclinical Atherosclerosis in Subjects with Moderate Hypercholesterolemia. Frontiers in Pharmacology, 2016. DOI: 10.3389/fphar.2015.00299
Citrus bergamia Extract for Cholesterol and Lipid Metabolism Management: A Randomized, Double-Blind Placebo-Controlled Clinical Trial. Foods, 2024. DOI: 10.3390/foods13233883