Cholesterol and coffee are connected partly through how you brew it. Unfiltered methods such as boiled coffee and French press let more coffee oils containing cafestol and kahweol pass into the drink. These compounds can raise blood cholesterol, especially with regular, higher intake. A paper filter traps most of them, making paper-filtered coffee a sensible option if you’re watching your LDL. That choice can support—but cannot replace—cholesterol care.
Why Brewing Method Matters For Cholesterol And Coffee
Cafestol and kahweol are natural diterpenes in coffee oils. They are not cholesterol in the cup; rather, they can affect how your body handles cholesterol. Cafestol appears to be the stronger cholesterol-raising compound. Research suggests it can interfere with bile-acid production, one route the body uses to process cholesterol. Kahweol may contribute too, but its separate effect on blood lipids is less clear.
Paper filters catch most of these oils. A 2023 cardiovascular review reported roughly 7.2 milligrams (mg) of each compound per cup of boiled coffee, compared with about 0.02 mg of each in paper-filtered coffee. These amounts illustrate a large difference in diterpene exposure, not a guaranteed change in your personal cholesterol result.
A small randomized crossover trial helps show that dose matters. In 1997, R. Urgert and colleagues gave 10 healthy male volunteers purified cafestol, with or without kahweol, for 28 days. The cafestol dose—61–64 mg daily—raised average LDL by 0.57 mmol/L (22 mg/dL) from baseline. This was a controlled, concentrated dose, not a test of ordinary coffee drinking. It supports the role of cafestol but should not be used to predict the effect of a particular number of cups.
French Press, Boiled Coffee And Espresso Are Not Identical
French press coffee, also called cafetière or plunger coffee in some countries, is unfiltered: its metal mesh does not trap coffee oils as effectively as paper. Boiled coffee also allows more diterpenes into the drink. In general, less filtration means more cafestol and kahweol, but the amount varies with the coffee and preparation.
Espresso is more complicated. In the 2015–2016 Tromsø Study in Northern Norway, researchers examined blood cholesterol and reported coffee habits among 21,083 residents aged 40 and older. Drinking three to five espressos a day was associated with higher total cholesterol than drinking none. The study was cross-sectional, so it cannot establish that espresso caused the difference; it measured total cholesterol, not just LDL. Espresso samples can also vary substantially in diterpene content, so the result does not define a universal effect for every machine or serving.
A 2025 study by Erik Orrje and colleagues measured coffee samples from Swedish workplaces and home brewing. Most workplace-machine coffees had more cafestol and kahweol than paper-filtered coffee, but less than boiled coffee. French press and percolator samples generally had intermediate levels, while some espresso samples were much higher than others. This was a chemical analysis of samples, not a study of people’s cholesterol. It shows why the brewing label alone may not tell you the exact amount in your cup.
What To Consider If Your Cholesterol Is High
If you regularly drink boiled or French press coffee and have high LDL, switching some or all of it to paper-filtered coffee is a reasonable, low-effort consideration. You could also look at how much unfiltered coffee you drink across the day. The Tromsø findings suggest amount may matter: higher consumption of boiled or plunger coffee was associated with higher total cholesterol. They do not establish a precise safe cup limit, and cup sizes and recipes differ.
In the US, drip coffee is often paper-filtered; in the UK, Europe and Australia, espresso and cafetière or plunger methods are common. If you buy coffee at work or from a machine, its filtration may be unclear. A paper-filtered option is the more predictable choice for reducing diterpenes, but available measurements do not cover every product or machine.
Changing your brew is not a substitute for a lipid test, a clinician’s advice or treatment you have been prescribed. If you’re checking whether a change has affected your levels, ask your clinician when to repeat testing. You can also read about whether you need to fast before a cholesterol test.
The evidence is strongest for the difference in diterpene exposure between paper-filtered and unfiltered coffee. Studies of people’s cholesterol are less definitive about the size of the effect for each brew, particularly espresso. If your cholesterol is high, consider paper filtration as one practical adjustment—and keep the rest of your care plan in view.
