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Growing Penis Size, Alarms Researchers

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~ February 2023 ~

A new study has determined the average penis length has changed by 24 percent in the past 30 years – a stat doctors have labeled “concerning”.

The average penis length has increased over the past 30 years, a new study has revealed.

Research published in the World Journal of Men’s Health discovered that the average penis size had grown 24 per cent over nearly three decades.

But while many may think the findings are good news, experts warn it’s actually a “concerning” discovery.

Researchers at Stanford University who conducted the study fear the phallic inflation is due to unhealthy habits, like bingeing junk food or being mostly sedentary, or even pollution, the New York Post reports.

The average penis size has drastically grown in the last 30 years. Picture: iStock
The average penis size has drastically grown in the last 30 years. Picture: iStock

“Any overall change in development is concerning, because our reproductive system is one of the most important pieces of human biology,” Dr. Michael Eisenberg, the study’s author, told Stanford Medicine’s blog Scope.

“If we’re seeing this fast of a change, it means that something powerful is happening to our bodies.”

To get to this alarming conclusion, data from 75 studies with over 55,000 men from 1992 to 2021 focusing on the length of an erect penis was analyzed.

“Erect penile length is getting longer, from an average of 4.8 inches (12.1cm) to 6 inches (15.2cm), over the past 29 years,” Dr. Eisenberg said.

“Erect penile length is getting longer.” Picture: iStock
“Erect penile length is getting longer.” Picture: iStock

While more studies are needed to confirm the findings and, if confirmed, “determine the cause” of the changes, this research’s conclusions are hard for experts to swallow.

Dr. Eisenberg assumed he would see a decline in length – instead, he found the opposite.

“Given the trends we’d seen in other measures of men’s reproductive health, we thought there could be a decline in penile length due to the same environmental exposures,” he said.

“What we found was quite different from trends in other areas of male fertility and health.”

Experts have explained this is ‘concerning’ – not something to be celebrated.

Chemical exposure from pesticides or hygiene products, he continued, could be one of the various factors causing the quick growth. Such chemicals can disrupt the endocrine system, which regulates hormones.

Past studies have claimed pollution is shrinking penises – yet, this study may prove those findings false.

Australian men have the 43rd biggest penises in the world, a study of international penis sizes found last year.

However, a doctor recently revealed penis sizes are smaller than what we’ve been told because men with smaller penises don’t partake in the research. This results in “skewed” data, he claimed.

A version of this article originally appeared here on

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