The research only shows an association and can not prove that coffee leads to a longer life, but experts say it is consistent with other studies that have shown potential beneficial effects of regularly drinking coffee.
One study conducted a survey on over 520,000 people in 10 European countries - now the largest study on coffee and mortality.
A pair of large, landmark studies published Monday in the Annals of Internal Medicine found that drinking around three to five cups of coffee per day can be part of a healthy diet and that coffee drinkers had a lower risk of death, particularly from circulatory and digestive tract diseases.
More specifically, the study found that the coffee drinkers had a lowered risk of dying of digestive diseases and circulatory disease.
Similar results were reported by American scientists who conducted a separate investigation, recruiting 185,855 participants from different ethnic backgrounds.
According to the study, coffee consumption was related to low mortality risk of African-Americans, Japanese-Americans, Latinos, and whites, due to the association of coffee with diseases like cancer, stroke, diabetes, and, other heart, respiratory and kidney diseases.
The link was even stronger for people who drank two to three cups a day; that group saw an 18 percent reduced risk of death. People who drank one cup a day were 12% less likely to die than those who abstained. For instance, the study did not include factors like how much coffee drinkers earned compared to non-coffee drinkers.
"Coffee contains a lot of antioxidants and phenolic compounds that play an important role in cancer prevention", US study leader Dr. Veronica Setiawan added.
In the USA study, people who drank decaf also had a lower death risk, Setiawan said.
While researchers are hesitant to say that everyone should start downing Starbucks, stat, they are willing to conclude that coffee is safe to drink, and could potentially be beneficial. "If people enjoy their coffee they can relax and enjoy their coffee", he said, adding that people should not imagine that drinking extra coffee would militate against "other bad health behaviours". A quarter of participants drank two to three cups of coffee per day and seven per cent consumed four or more cups. Two to three cups of coffee can reduce a person's risk of early death by about 18%. New research has your java-loving back, showing that drinking more of it could lead to a longer life.
The studies also found thousands of people of different races and people living in different countries experience the same health benefits from coffee.
Coffee contains a number of compounds which possess antioxidant, anti-inflammatory and anticarcinogenic properties that scientists believe may explain why drinkers have lower rates of chronic liver disease and liver cancer. Women who drank coffee experienced a smaller but significant 8% reduction in risk of death.
As one of the world's most popular beverages, it is clear that us humans do love a good cup of coffee.