GITNUXREPORT 2025

Secondary Infertility Statistics

Secondary infertility affects many women, with multiple causes and risk factors.

Jannik Linder

Co-Founder of Gitnux, specialized in content and tech since 2016.

First published: April 29, 2025

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Statistic 1

Women aged 35-39 have a 20% increased risk of secondary infertility compared to those aged 30-34

Statistic 2

Approximately 10-15% of couples worldwide experience secondary infertility

Statistic 3

Secondary infertility accounts for about 40-50% of all infertility cases

Statistic 4

About 20-30% of secondary infertility cases are unexplained after standard testing

Statistic 5

Endometriosis is found in roughly 10-15% of women with secondary infertility

Statistic 6

Prior pregnancy complications can increase the risk of secondary infertility by up to 30%

Statistic 7

Tubal damage is responsible for approximately 25-30% of secondary infertility cases

Statistic 8

Male factors contribute to up to 40% of secondary infertility cases

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Key Highlights

Approximately 10-15% of couples worldwide experience secondary infertility
Secondary infertility accounts for about 40-50% of all infertility cases
Women aged 35-39 have a 20% increased risk of secondary infertility compared to those aged 30-34
Prior pregnancy complications can increase the risk of secondary infertility by up to 30%
About 20-30% of secondary infertility cases are unexplained after standard testing
Tubal damage is responsible for approximately 25-30% of secondary infertility cases
Endometriosis is found in roughly 10-15% of women with secondary infertility
Male factors contribute to up to 40% of secondary infertility cases

Did you know that nearly one in ten couples worldwide faces secondary infertility, with factors like age, previous pregnancy issues, and male contributions all playing a significant role?

Age-Related Factors

Women aged 35-39 have a 20% increased risk of secondary infertility compared to those aged 30-34

Age-Related Factors Interpretation

As women approach their late thirties, the reproductive clock seems to tick more audibly, with a 20% heightened risk of secondary infertility reminding us that time isn't just fleeting—it's subtly nudging us toward urgent fertility conversations.

Prevalence and Incidence Rates

Approximately 10-15% of couples worldwide experience secondary infertility
Secondary infertility accounts for about 40-50% of all infertility cases
About 20-30% of secondary infertility cases are unexplained after standard testing
Endometriosis is found in roughly 10-15% of women with secondary infertility

Prevalence and Incidence Rates Interpretation

With nearly half of all infertility cases stemming from secondary causes, and a significant portion remaining unexplained even after testing, the statistics underscore that secondary infertility is not just a residual concern but a complex challenge demanding nuanced understanding—reminding us that having one child doesn't always guarantee a straightforward path to more.

Risk Factors and Contributing Conditions

Prior pregnancy complications can increase the risk of secondary infertility by up to 30%
Tubal damage is responsible for approximately 25-30% of secondary infertility cases
Male factors contribute to up to 40% of secondary infertility cases

Risk Factors and Contributing Conditions Interpretation

While prior pregnancy complications and tubal damage certainly raise the stakes in the game of secondary infertility, it's the male factors contributing up to 40% that remind us to consider all players when addressing reproductive hurdles—proving that fertility is truly a team effort.