Air Pollution Links to Reduced Male Fertility
Research indicates that exposure to haze and particulate matter impairs sperm quality through oxidative stress.
Updated on Oct. 14, 2026 in Men’s Health
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Recent studies suggest a clear correlation between air pollution exposure and decreased male fertility. Pollutants like fine particulate matter appear to damage sperm integrity and disrupt the temperature regulation required for healthy sperm production.
Why it matters
Understanding this environmental impact is vital for addressing rising fertility challenges in increasingly urbanized and polluted global regions. By identifying how haze triggers oxidative stress, researchers are uncovering how external air quality directly affects reproductive health.
A 2025 BMC Urology review of 17 studies involving 24,000 participants identified a negative link between air pollution and sperm parameters. Meanwhile, researchers note that testes must remain 2 to 4 degrees Celsius lower than core body temperature to produce sperm.
The players
Chiang Mai University
This Thai institution conducted a 2024 study focused on the impacts of seasonal haze on fertility.
BMC Urology
This peer-reviewed medical journal published a 2025 comprehensive review examining how air quality affects sperm parameters.
The details
Pollutants such as ozone and nitrogen dioxide trigger oxidative stress, leading to DNA fragmentation that can reduce the chances of pregnancy. Furthermore, polluted air may raise ambient temperatures, preventing the testes from maintaining the precise temperature range needed for sperm development.
Timeline
A 2024 Chiang Mai University study examined the link between seasonal haze and fertility parameters.
A 2025 BMC Urology review synthesized data from 17 separate studies.
The Big Picture
This research follows the precedent set by the 2025 BMC Urology systematic review of sperm parameters to define the environmental health trajectory. It marks a departure from traditional focus on lifestyle factors by highlighting the systemic physiological damage caused by particulate matter.
The findings suggest that minimizing exposure to high-haze environments may be a practical step for men looking to improve reproductive health. Ongoing research implies that outdoor workers in polluted areas might face higher risks of sperm quality degradation due to daily environmental exposure.
The takeaway
Maintaining lower testicular temperatures is essential for optimal sperm production, which can be compromised by high ambient air temperatures. Individuals may benefit from monitoring local air quality and minimizing prolonged outdoor exposure during periods of high pollution.
Further reading
Find more insights on reproductive wellness in the Men’s Health section.
Source note: This article includes information reported by The Star.
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