The U.S. remains the fattest country in the world, with Australia and the U.K. not far behind.

According to the latest official figures from 10 countries, Americans weigh on average 196 lbs (89kg), followed by Australians at around 189 lbs (86 kg), and the British, who weigh roughly 186 lbs (84 kg).

The data, compiled by diet products firm Forza Supplements, was consistent with another report issued in November in which the U.S. also topped the Organization for Economic Co-operation and Development's (OECD) league of overweight nations.

The research also looked into the average life expectancy of men across the countries, as well as their height, the Daily Mail reported.

The findings revealed that there was a stark difference in life expectancy of men in the U.S. compared to those from Japan and Australia.

The life expectancy of American men is 76.9 years old, compared to 80.9 in both Japan and Australia. Men in the U.K. are expected to live till the age of 80 on average, while Italians can expect to reach 80.5 years old.

When it comes to height, Dutch men are the tallest at 6ft. (182cm.) on average, while Japanese men are the shortest at 5ft. 7in. (171cm).

Men in the U.K. are slightly taller at 5ft. 10in. (177cm.), compared to Americans at 5ft. 9.5in. (176cm.) and Australians at 5ft. 9in. (175cm.).

"These figures clearly show how obesity levels are going up all the time and this is impacting on male life expectancy," said Lee Smith, managing director of Forza Supplements.

He cautioned that the U.K. is "clearly heading the same way" as the U.S. where the average man now weighs around 196 lbs. (88.9 kg.). The diet products firm predicted that the half the U.K. will be obese by 2050 if the trend continues.

According to the report from OECD, 38.2 percent of the 325 million people in the U.S. are obese. Twenty-four percent are considered obese in Germany, 17 percent in France and Spain, and only 10 percent in Italy.

"Despite being one of the world's richest nations, life expectancy in the US is lower than in many countries and the obesity epidemic is a big factor," Smith said. 

"The challenge for the next 50 years is how to ensure the positive benefits in public health are not destroyed by our love of food and drink," he added.

The U.S. has been trying to implement awareness programs for decades to combat the obesity epidemic.

Former First Lady Michelle Obama had spearheaded the "Let's Move" campaign to motivate children to eat healthier and stay active. However, the U.S. Department of Agriculture announced in December last year that it will relax the school lunch guidelines championed by the former first lady in favor of new rules that would allow sweetened milk and sodium rich entrees.