According to European Food Safety Agency (EFSA)caffeine consumption per day should not exceed 400 mgbeyond that, it would risk to become harmful to health. Indeed, too much coffee increase the risk of dementiacardiovascular disease,hypertension, glaucoma and cholesterol.
A recent Norwegian study, published in the journal Open Heart, clarified that the impact of coffee on increased cholesterol would be sex-linked and the method of brewing the beverage.
Coffee and cholesterol: differences between men and women
To arrive at this conclusion, the researchers wanted to compare the impact of espresso coffee compared to other methods of preparation, in adults aged 40 years (mean 56 years).
Scientists collected data from 21,083 people having been part of the 7th survey of the Tromso study (Norway) in 2015-16. These participants were interviewed on their coffee consumption (daily consumption and type of preparation). Blood samples were taken. the weight and height of volunteers were also measured.
The results showed that the women drank on average just under four cups of coffee per day vs. five daily cups at men’s.
“The consumption of 3 to 5 cups of espresso per day was significantly associated with increased serum total cholesterolespecially in men,” the researchers explain.
Compared to those who did not drink coffee, serum cholesterol was 0.09 mmol/l higher in women and 0.16 mmol/l in men.
For the same type of coffee, and the same quantity, cholesterol increases between sexestouching mainly men. But in other cases, the type of coffee can also influence the presence of cholesterol.
Cholesterol: the types of coffees that increase it
Researchers have found that drinking 6 cups of filtered coffee daily was associated with a 0.11 mmol/L increase in cholesterol in women. On the contrary, there was no increase among men between those consuming filtered coffee and those taking unfiltered.
For its part, instant coffee was associated with an increase in cholesterol in both sexes, but the number of cups drunk had not no impact on these results.
Researchers have also found that drinking 6 cups of French press coffee per day increases cholesterol, to a similar degree in both sexes.
Experts say they don’t yet have an obvious answer about gender differences on the impact of coffee on cholesterol. They add that more research is needed: “Increased knowledge of the association of espresso coffee with serum cholesterol improve recommendations for coffee consumption.”