A meta-analysis of 42 studies found that environmental exposure to endocrine-disrupting chemicals—including phthalates, bisphenols, persistent organic pollutants, and heavy metals like mercury, lead, and cadmium—is associated with higher prevalence of metabolic dysfunction-associated steatotic liver disease (MASLD), the most common chronic liver condition worldwide.
- Meta-analysis of 42 studies examined links between everyday chemical exposures and fatty liver disease
- Phthalates, bisphenols, persistent pollutants, and heavy metals showed positive associations with MASLD
- Mercury showed the strongest association among heavy metals, followed by lead and cadmium
How this compares to prior research
MASLD, formerly called non-alcoholic fatty liver disease, affects approximately 25-30% of the global adult population and is recognized as the most prevalent chronic liver condition worldwide. While obesity, diabetes, and unhealthy diets have been established as primary risk factors, the role of environmental chemical exposures in MASLD development has been incompletely characterized. Previous research identified metabolic toxicity from various endocrine-disrupting chemicals, but quantitative associations across different chemical classes had not been systematically synthesized until this analysis.
MASLD Prevalence Among Global Adult Population, 1980–1989
Key findings
- Bisphenols showed a 29% higher odds of MASLD (OR: 1.29), with bisphenol S demonstrating a 47% increase
- Mercury exposure demonstrated the strongest heavy metal association with 60% higher MASLD odds, followed by lead at 40% and cadmium at 30%
- Persistent organic pollutants including organochlorine pesticides showed 30% higher odds of MASLD across pooled studies
What this means in practice
- Consider reducing exposure to plastics by using glass or stainless steel containers instead of plastic for food storage and heating
- Ask your doctor about liver health screening if you have known exposure to industrial chemicals or heavy metals through work or environment
- Note that while chemical exposure may contribute, maintaining healthy weight and diet remains the primary strategy for preventing fatty liver disease
Frequently asked questions
What are endocrine-disrupting chemicals?
EDCs are man-made chemicals found in plastics, pesticides, and industrial products that interfere with hormone systems. Common examples include phthalates in plastic containers, bisphenols in receipts, and heavy metals like mercury and lead.
How strong is the link between these chemicals and fatty liver disease?
The studies show associations ranging from 17% to 60% higher odds depending on the chemical. However, most evidence is cross-sectional, so causation cannot be confirmed—only that exposure and disease occur together.
Can avoiding these chemicals prevent fatty liver disease?
While the research suggests a connection, fatty liver disease is primarily linked to obesity, diabetes, and diet. Reducing chemical exposure may help, but lifestyle factors remain the most important prevention strategy.
Key terms explained
Endocrine-disrupting chemicals (EDCs)
Man-made substances that interfere with hormone systems in the body, found in plastics, pesticides, and industrial products
MASLD (Metabolic dysfunction-associated steatotic liver disease)
Fat buildup in the liver linked to metabolic problems; formerly called non-alcoholic fatty liver disease or NAFLD
Phthalates
Chemicals used to make plastics flexible, commonly found in food packaging, personal care products, and vinyl flooring
Source: Environmental Endocrine-Disrupting Chemicals and Metabolic Dysfunction-Associated Steatotic Liver Disease. · DOI: doi: 10.1111/liv.70793