BARRIO – On average, men who live in Ecuador and Cameroon have the biggest members, with penises measuring nearly seven inches (17cm) from the root to the tip of the head when erect.

The US and UK didn’t even make the top 50, with America languishing at 60th with men having an average size of 5.4in (13.5cm) — nearly a third shorter. Britain was in 68th place, with a penis size of 5.2in (13.1cm).

Researchers behind the list said they struggled to find a connection between penis length and height but found countries with higher obesity rates tended to have smaller members, which could explain the distribution of fat tissue.

To find out which countries have the largest penises, researchers in Germany combed through more than 40 recent studies involving thousands of men.

The team extracted data on average penis size from nearly 90 countries, with the measurements having been independently verified.

Wherever possible, the team avoided using studies where men had self-reported their penis size.

In cases where individuals had a fat pad above the penis, this was slightly compressed to help with measurements.

These were all averaged for each country and then converted into inches to allow for comparison between different nations. 

Previously, fitness instructors have said men can add inches to their penis by simply losing weight.

Out of the top 20 countries, half were in Africa, while three were in South America, North America and Europe.