Inequalities in availability of healthy food and medical treatment contribute to higher mortality in eastern Europe.
The study's author did warn that the findings didn't mean people should gorge on meat and cheese.
The study examined the medical histories of 687 men from Saudi Arabia and the United Arab Emirates
The new South Korean report found that as many as five cups of coffee a day were beneficial.
The report also showed that a high level of participants suffered from diabetes and over 27% were obese.