Environmental and Occupational Influences on Male Fertility

Male fertility is increasingly recognised as sensitive to a range of environmental and occupational hazards. Chemical exposures—from pesticides and heavy metals to industrial solvents and engineered nanomaterials—can disrupt testicular function, impair sperm maturation and compromise fertilising potential. Mechanisms include oxidative stress, endocrine disruption, epigenetic alterations and direct cytotoxicity to germ and supporting cells. Occupational groups at elevated risk encompass agricultural workers, pesticide applicators, petrochemical employees and those in manufacturing or waste-management facilities. Globally, declining sperm counts and increased infertility rates underscore the public health significance of these exposures. Practical applications emerging from current research include the development of sensitive biomarkers (for example, circular RNAs), improved workplace monitoring and targeted interventions to limit hazardous exposures and preserve male reproductive health.

Research from Nature Portfolio

Recent studies have shown that acute exposure to organophosphorus pesticide metabolites can severely compromise sperm function. In a mammalian model, brief in vitro contact with metabolites derived from common agricultural pesticides induced dose-dependent membrane damage, lipid peroxidation and mitochondrial dysfunction in spermatozoa. These structural and biochemical alterations precipitated premature capacitation and reduced in vitro fertilisation rates, illustrating how secondary pesticide residues may pose substantial risks to male fertility in agricultural and livestock settings.

Environmental and Occupational Influences on Male Fertility publication trend

The graph below shows the total number of articles in environmental and occupational influences on male fertility across all publications each year (not limited to Nature Index journals).

Technical terms

Oxidative stress: an imbalance between production of reactive oxygen species and antioxidant defences, leading to cellular damage.

Endocrine disruptor: a chemical that interferes with the synthesis, secretion, transport or action of natural hormones.

Circular RNA (circRNA): a class of non-coding RNA produced by backsplicing, with roles in gene regulation and as potential biomarkers.

Capacitation: a series of biochemical and physiological changes enabling spermatozoa to fertilise an oocyte.

References

1. Adult Organophosphate and Carbamate Insecticide Exposure and Sperm Concentration: A Systematic Review and Meta-Analysis of the Epidemiological Evidence. Environmental Health Perspectives (2023).
2. Variation of sperm quality and circular RNA content in men exposed to environmental contamination with heavy metals in ‘Land of Fires’, Italy. Human Reproduction (2024).
3. Impact of organophosphate pesticides exposure on human semen parameters and testosterone: a systematic review and meta-analysis. Frontiers in Endocrinology (2023).
4. Acute exposure to organophosphorus pesticide metabolites compromises buffalo sperm function and impairs fertility. Scientific Reports (2023).