They also found evidence it reduces the chance of certain cancers, diabetes, liver disease and dementia.
Coffee drinkers also appeared to have lower risks for heart disease.
However the study authors warn that most existing studies on the benefits of coffee are "of lower quality", as they are merely observational and do not explain causality.
Moderate coffee drinking is protected, and three to four mugs a day may have some medical advantages, as indicated by an expansive audit of past examinations, in the BMJ. At the same time, high consumption is associated with an increased risk of bone fractures in women, and can also lead to a higher risk of rheumatoid arthritis.
"There is a balance of risks in life, and the benefits of moderate consumption of coffee seem to outweigh the risks", he said.
It contains a number of wonder compounds which possess antioxidant, anti-inflammatory, anticarcinogenic properties which scientists believe might explain why drinkers experience lower rates of chronic liver disease and liver cancer. And, if you combined all of the research done on coffee and pooled together all of their conclusions, what would be the verdict?
Coffee is one of the most commonly consumed beverages worldwide and could have positive health benefits. This is important to know because around the world over two billion cups of coffee are consumed every day. The latest study builds on that research but calls for more randomised controlled trials to further understand the correlation. The greatest benefit was seen for liver conditions, such as cirrhosis of the liver.
"The evidence is so robust and consistent across studies and health outcomes, however, that we can be reassured that drinking coffee is generally safe", he continues. This included lower risk of death from any causes, or getting heart disease.
As this study shows, some people may be at higher risk of adverse effects, he said, and there is "substantial uncertainty" about the effects of higher levels of intake.