Adults who drink a couple cups of coffee a day — unsweetened or with a spoonful of sugar — are less likely to die during a seven-year follow-up period, a study showed.

The study involved 171,616 adults in the United Kingdom who completed a survey about their coffee habits.

76% drank coffee, most unsweetened. 14% of participants added over a spoonful of sugar to their coffee.

6% used artificial sweeteners. The study found that 24% of non-coffee drinkers drank tea. 3.177 participants (1.85%) died throughout a seven-year period.

Adults who drank modest volumes of coffee sweetened with sugar daily were 30% less likely to die from any cause throughout a seven-year follow-up period, study coauthor Dan Liu, M.D., said in a video release.

In 2006-2010, research participants averaged 56 years old. Diet, smoking, socioeconomic status, prior health conditions, and air pollution exposure were controlled for in the study.

– Participants who drank any amount of unsweetened coffee were 16 to 21 percent less likely to die than subjects who did not drink coffee.

Wee notes that the coffee habits of Americans may not mesh with those taken from surveys a decade ago in the United Kingdom.