Volatile Organic Compound Exposure and Health Effects

Volatile organic compounds (VOCs) are a diverse group of carbon-based chemicals that readily vapourise at ambient temperature. Common sources include industrial solvents, vehicle emissions, building materials and household products. Widespread exposure—primarily via inhalation—has been linked to oxidative stress, inflammatory responses and direct cytotoxicity across multiple organ systems. Respiratory effects range from airway inflammation and reduced pulmonary function to chronic obstructive pulmonary disease. Systemically, VOCs have been implicated in metabolic dysregulation, endocrine disruption and neurodevelopmental impairments, with particular concern for vulnerable populations such as pregnant women and young children. Advances in biomonitoring, including the quantification of urinary and blood metabolites, have refined exposure assessment and facilitated the investigation of mixture effects. Mechanistic studies now emphasise cellular pathways of stress response, immune activation and DNA damage, informing more accurate risk models and guiding public health strategies aimed at reducing both indoor and ambient VOC concentrations.

Research from Nature Portfolio

Recent investigations using an alternative invertebrate model have illuminated molecular and behavioural consequences of indoor air pollutants. Comprehensive transcriptomic profiling following inhalation of toluene and formaldehyde revealed activation of immune- and stress-response pathways, with hub molecules implicating the p38 signalling cascade. Functional validation in genetic mutants demonstrated that disruption of this pathway amplified behavioural deficits, as quantified by automated movement analyses. These multidisciplinary approaches underscore the value of high-throughput genetic screens for identifying conserved determinants of susceptibility and for hazard assessment of prevalent VOCs.

Volatile Organic Compound Exposure and Health Effects publication trend

The graph below shows the total number of articles in volatile organic compound exposure and health effects across all publications each year (not limited to Nature Index journals).

Technical terms

Volatile organic compound (VOC): Carbon-based chemical that vapourises easily at room temperature, contributing to indoor and outdoor air pollution.

Biomarker: Quantifiable indicator of exposure or biological effect, such as urinary metabolites or oxidative stress markers.

Oxidative stress: Imbalance between generation of reactive oxygen species and antioxidant defences, resulting in cellular damage.

Airway inflammation: Immune-mediated response in the respiratory tract, marked by elevated inflammatory mediators and impaired lung function.

Metabolic syndrome: Cluster of metabolic abnormalities—insulin resistance, dyslipidaemia, hypertension and central obesity—associated with heightened cardiovascular risk.

References

1. Exposure to volatile organic compounds and airway inflammation. Environmental Health (2018).
2. Inhalation toxicity of indoor air pollutants in Drosophila melanogaster using integrated transcriptomics and computational behavior analyses. Scientific Reports (2017).
3. Association of volatile organic compound exposure with metabolic syndrome and its components: a nationwide cross-sectional study. BMC Public Health (2024).
4. Assessing volatile organic compounds exposure and chronic obstructive pulmonary diseases in US adults. Frontiers in Public Health (2023).