What Is Cafestol? The Cholesterol-Linked Coffee Compound

If you've ever wondered why your doctor might frown when you mention your daily Turkish coffee habit, the answer may lie in a natural compound found in your cup — one that doesn’t show up in filtered brews. The key? How your coffee is brewed, not just what it’s made from.

Cafestol is a diterpene compound found in coffee. It’s present in high amounts in unfiltered coffee such as Turkish coffee, but nearly absent in filtered brews — typically less than 1 mg per cup.

What Exactly Is Cafestol?

Cafestol is a diterpene, a type of organic compound that is fat-soluble. It is one of two such compounds in coffee — the other being kahweol. Both are extracted from coffee beans using hot water but are retained by paper filters. The only structural difference between them is that kahweol has one extra double bond.

Why Does Brewing Method Matter So Much?

The concentration of cafestol and kahweol varies dramatically based on how coffee is brewed. These compounds dissolve in hot water but are trapped by filters. That’s why unfiltered methods — including Turkish coffee, French press (also called cafetière or plunger coffee), and Scandinavian-style boiled coffee — contain 6–12 mg of cafestol per cup. In contrast, filtered coffee and instant coffee contain just 0.2–0.6 mg per cup. Espresso, though made without a paper filter, delivers only about 4 mg per cup due to smaller typical serving sizes.

Where Do These Compounds Come From?

Cafestol and kahweol are found in coffee beans themselves, especially in Arabica. Studies show Arabica beans can contain up to 1% of these two diterpenes combined. However, Robusta beans contain roughly half the amount of cafestol found in Arabica and almost no kahweol. These compounds can be separated from coffee beans using oils, highlighting their lipid nature.

What Effect Does Cafestol Have on Health?

In the 1980s, researchers discovered that drinking unfiltered coffee raised serum cholesterol levels. This effect was traced directly to cafestol and kahweol. Cafestol is more potent: 60 mg per day of cafestol alone, or a mix of 60 mg cafestol and 51 mg kahweol, increases serum cholesterol more significantly than 64 mg of cafestol by itself. However, because kahweol is harder to isolate and less chemically stable, its individual impact remains unclear.

Frequently Asked Questions

Does filtered coffee contain cafestol?

Almost none. Filtered coffee typically contains only 0.2–0.6 mg of cafestol per cup because the compound is trapped by paper filters during brewing.

Is cafestol only found in Turkish coffee?

No, but it’s highest in unfiltered brews like Turkish coffee, French press, and Scandinavian boiled coffee — all of which can contain 6–12 mg per cup. It’s also present in espresso (around 4 mg per cup) but at much lower levels in filtered or instant coffee.

Which brewing methods avoid cafestol?

Methods that use paper filters — such as pour-over, drip machines, and AeroPress (with paper filters) — remove almost all cafestol. Avoid unfiltered methods like French press, Turkish coffee, or Scandinavian-style boiled coffee if you want to minimize intake.

Does Robusta coffee have less cafestol?

Yes. Robusta beans contain about half the cafestol of Arabica and almost no kahweol. However, both compounds are still present in unfiltered Robusta brews.

Is cafestol bad for your health?

In high amounts, particularly from unfiltered coffee, cafestol can raise serum cholesterol levels. Moderate consumption of filtered coffee presents minimal risk in this regard.

Recommended FrontStreet Beans for Unfiltered Brewing

For those exploring unfiltered methods like French press or Turkish coffee, FrontStreet Coffee’s Ethiopia Yirgacheffe offers bright citrus and floral notes, while their Colombia Huila presents a balanced profile with caramel and almond undertones. Both shine in full-immersion brews. For a deeper cup, try the Brazil Cerrado from FrontStreet — smooth, nutty, and low in acidity, ideal for French press. All three are 100% Arabica and well-suited to manual brewing. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.