Is the air we breathe quietly impacting something as fundamental as fertility? With pollution levels rising across cities, a new concern is coming into focus. What happens when everyday exposure to poor air quality starts affecting reproductive health, especially among young men? A recent study points to a worrying trend, showing up to an 11% drop in normal sperm DNA integrity among men living in highly polluted areas, raising fresh questions about the hidden impact of toxic air.
Analysing data from 3,222 men aged 21 to 40 across 120 centres nationwide, the research establishes a clear link between worsening air quality and declining sperm DNA health. Men living in regions with AQI levels above 151 showed the steepest decline, while even moderately polluted areas (AQI 101–150) recorded an 8.8% drop in normal sperm DNA integrity. In contrast, cleaner regions (AQI 50–100) reported 69.3% normal sperm samples and 30.7% abnormal ones, indicating how air quality directly influences reproductive health outcomes. These findings come from a comprehensive study conducted by Indira IVF.
Conducted in line with World Health Organization guidelines, the study classified sperm DNA fragmentation scores as normal when below 25% and abnormal when above 25%, enabling a more precise understanding of how environmental exposure affects genetic integrity. It also introduces the concept of “pollution bias,” highlighting how rising pollution levels are linked to increased abnormal sperm DNA fragmentation and a steady decline in overall sperm quality. The study is titled “Evaluating the Impact of Environmental Pollution on Sperm DNA Fragmentation: A Retrospective Cohort Analysis.”
Experts say the implications extend beyond fertility challenges, noting that prolonged exposure to environmental toxins can compromise sperm DNA and may also impact foetal development, placing air pollution within a broader reproductive and developmental health context. The findings further suggest that rising AQI levels could act as a strong indicator of disturbed sperm DNA fragmentation, particularly in high-pollution urban centres, said Dr. Kshitiz Murdia, CEO and Whole-Time Director, Indira IVF Hospital Limited.
Meanwhile, Dr. Vipin Chandra, Chief of Clinical and Lab Operations at Indira IVF, highlighted that the study moves beyond conventional semen parameters such as sperm count or motility. By focusing specifically on sperm DNA integrity, it offers a deeper and more precise assessment of how air pollution directly affects the genetic structure of sperm, shedding light on an often overlooked contributor to male infertility.
By linking rising AQI levels with measurable DNA damage, the study identifies air pollution as a significant factor behind declining reproductive health. As urban air quality continues to deteriorate, the findings underline an urgent shift in perspective, positioning pollution not just as an environmental concern, but as a growing reproductive health risk that can no longer be ignored.
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