Coffee machines, commonly found in office environments, might be unknowingly affecting the health of employees. A recent study led by researchers from Uppsala University and Chalmers University of Technology has unveiled that these machines can produce substances associated with elevated cholesterol levels.
The study highlighted two specific compounds—cafestol and kahweol—which are diterpenes found in coffee. These compounds have been linked to increased LDL cholesterol, thereby potentially raising the risk of cardiovascular diseases. Among various types of coffee machines, brewing machines were found to produce the highest concentrations of these diterpenes.
According to David Iggman, a researcher at Uppsala University, “We examined 14 coffee machines and discovered that the levels of these substances are significantly higher in coffee from brewing machines compared to regular drip-filter coffee makers.” He added, “Most coffee samples contained levels that could feasibly impact LDL cholesterol levels and future cardiovascular risk.”
One reason for the elevated diterpene levels in coffee from brewing machines is the absence of a fine filter, allowing more of these compounds to pass through. Iggman explained, “From this, we infer that the filtering process is critical in determining the presence of these cholesterol-elevating substances in coffee.” He noted that the problem varies between different coffee machine types, and concentrations can also fluctuate over time.
As many companies worldwide offer free coffee to entice employees back to the office, this study’s findings are especially relevant. In fact, 2023 data from Flavia showed that offering complimentary beverages was the most sought-after perk, with over 80% of employees indicating that free beverages made them feel valued. Additionally, 66% of on-site employees consider a hot coffee their first drink of choice, and 77% reported needing two to three cups to remain productive during their workday, according to Tea & Coffee Trade Journal.
In light of the study, employers might need to reassess their choice of coffee machines to ensure they filter out cholesterol-elevating substances effectively. A regular drip-filter coffee maker, using a paper filter, can almost entirely eliminate these compounds. The report suggests, “Based on the concentrations of cafestol and kahweol in investigated machine coffees, thoroughly filtered coffee seems preferable for cardiovascular health.”
Iggman, who led the study, concluded, “For those who consume large quantities of coffee daily, it’s evident that drip-filter coffee or other well-filtered options are preferable.”
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