What Is Cafestol? Why Filtered and Unfiltered Coffee Differ

Cafestol is a compound in coffee oil that research has associated with raised LDL cholesterol, and a paper filter removes most of it. That single fact explains why brewing method shows up in coffee and cholesterol research while coffee itself generally does not. Cafestol and a related compound, kahweol, are diterpenes carried in coffee's natural oils. A paper filter traps those oils, so drip and pour over coffee contain very little cafestol. Methods without a paper filter leave the oils in the cup: French press, Turkish coffee, moka pot, espresso and boiled or cowboy coffee all carry substantially more. Scandinavian boiled coffee sits at the top of the range. The practical implication is narrow and useful. If a clinician has told you to watch your cholesterol and you drink several French presses a day, switching to paper-filtered coffee changes your cafestol intake considerably without changing your coffee habit at all.

Here is how much each method carries and what to do about it. Paper-filtered brewing is the low-cafestol route, and everything we sell comes in a drip or pour over grind.

Which brewing methods carry the most?

Espresso is the interesting case. The concentration is high but a serving is small, so the amount per drink lands lower than a mug of French press.

Why does a paper filter make such a difference?

Because cafestol travels in oil, and paper holds oil back.

Cellulose filter paper traps the lipid fraction of the brew along with the finest particles. A metal mesh, like a French press screen, has openings far too large to do that, so the oils pass straight through. That is also why French press coffee has a heavier, rounder body: you are drinking the oils, and they carry both the texture and the cafestol.

So the trade is real rather than free. The mouthfeel people like in a French press comes from the same fraction they would be removing. A reusable metal filter in a drip machine behaves like a French press on this measure, not like paper.

Does this mean coffee raises cholesterol?

Not as a blanket statement, and the distinction matters.

The research associates unfiltered coffee, and the cafestol in it, with raised LDL. Filtered coffee does not carry the same association, which is why studies that lump all coffee together produce muddier results than studies that separate brewing methods.

The effect also scales with volume. One cafetière at the weekend is a different exposure from a litre of boiled coffee every day for years. If you drink unfiltered coffee occasionally, this is background information rather than something to act on.

And if you have been given specific dietary advice about cholesterol, follow that advice rather than this article. We are a roaster, not a clinic.

What should you actually do?

If it applies to you, switch the method and keep the coffee.

Paper-filtered pour over gives you a clean, bright cup with very little cafestol, and it costs about the price of a cone and a packet of filters. If you want to keep immersion brewing, pouring a French press through a paper filter afterwards works and is less strange than it sounds.

What you do not need to do is switch to decaf or drink less coffee. Decaffeination does not remove cafestol, so decaf French press carries it just the same. The variable here is the filter, not the caffeine. Grind guidance for each method is in the grind size guide.

Does CBD coffee change any of this?

No. Cafestol comes from the coffee bean's own oils and has nothing to do with the infusion.

Our broad-spectrum extract is water-soluble and goes into the bean during the roast, so it is not part of the lipid fraction a paper filter removes. A paper-filtered cup of ours keeps its cannabinoid dose and loses the cafestol, which is a convenient combination rather than a designed one.

That is worth saying plainly because it is one of the few cases where the brewing choice separates the two. More on what reaches the cup in CBD bioavailability.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. This article is general information, not medical advice. If you have concerns about cholesterol or have been given dietary guidance, follow your doctor's advice.