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Long-term, heavy coffee consumption and CVD risk


Feb. 18, 2021 Science Daily

In a world first genetic study, researchers from the Australian Centre for Precision Health at the University of South Australia found that that long-term, heavy coffee consumption — six or more cups a day — can increase the amount of lipids (fats) in your blood to significantly heighten your risk of cardiovascular disease (CVD).

Importantly, this correlation is both positive and dose-dependent, meaning that the more coffee you drink, the greater the risk of CVD.

It’s a bitter pill, especially for lovers of coffee, but according to UniSA researcher, Professor Elina Hyppönen, it’s one we must swallow if we want keep our hearts healthy.

“There’s certainly a lot of scientific debate about the pros and cons of coffee, but while it may seem like we’re going over old ground, it’s essential to fully understand how one of the world’s most widely consumed drinks can impact our health,” Prof Hyppönen says.

“In this study we looked at genetic and phenotypic associations between coffee intake and plasma lipid profiles — the cholesterols and fats in your blood — finding causal evidence that habitual coffee consumption contributes to an adverse lipid profile which can increase your risk of heart disease.

“High levels of blood lipids are a known risk factor for heart disease, and interestingly, as coffee beans contain a very potent cholesterol-elevating compound (cafestol), it was valuable to examine them together.

“Cafestol is mainly present in unfiltered brews, such as French press, Turkish and Greek coffees, but it’s also in espressos, which is the base for most barista-made coffees, including lattes and cappuccinos.

“There is no, or very little cafestol in filtered and instant coffee, so with respect to effects on lipids, those are good coffee choices.

“The implications of this study are potentially broad-reaching. In my opinion it is especially important for people with high cholesterol or who are worried about getting heart disease to carefully choose what type of coffee they drink.

“Importantly, the coffee-lipid association is dose-dependent — the more you drink unfiltered coffee the more it raises your blood lipids, putting you at greater risk of heart disease.”

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