5. Saudi Arabia
Obesity rate in the country: 69.6%
Number of cigarettes per adult: 1,395.14
Life expectancy: 74.5 years
Deaths due to coronary heart disease: 165.67 per 100,000 people
Insider Monkey Score: 54.25
Many of the countries on this list of unhealthiest countries in the world are rich Arab countries, and Saudi Arabia is just another country where too much money and little care for healthcare has led to a torrid situation.