Recent findings have suggested that those people who drink unfiltered coffee are at more risk of having increased cholesterol levels in their blood. A review of previously published studies has shown that heavy coffee drinking is associated with raised cholesterol and homocysteine (an amino acid) levels in blood, both of which are known risk factors for heart disease.
Researchers have pointed out that unfiltered coffee or boiled coffee contains high concentration of some compounds (called terpenoids), which are responsible for increased cholesterol. However, not only unfiltered coffee but also filtered coffee is responsible for increasing the blood levels of cholesterol and homocysteine as even filtering the coffee removes terpenoids partly and not completely.
Hence, researchers suggest that it is best to avoid coffee as it can cause a significant increase in blood cholesterol, triglycerides and LDL (‘bad’) cholesterol.