Nothing jolts the body into action in the morning like a strong cup of coffee. However, people concerned about heart health may want to limit their intake, a new trial suggests.
Several oily coffee-bean components can elevate cholesterol in a person's blood. Although the paper filters of drip coffeemakers largely eliminate those oils (SN: 2/4/95, p. 72), drinking even filtered coffee can increase blood concentrations of the amino acid homocysteine, another risk indicator (SN: 1/11/97, p. 22).
Norwegian scientists have now investigated these coffee-borne factors in a 6-week trial of 191 nonsmokers. All had been downing an average of 5 cups of coffee daily.