Women & Liver Fibrosis: Higher Risk with Cardiometabolic Factors | JAMA Network Open

A new study published this week in JAMA Network Open highlights a concerning disparity: women with cardiometabolic risk factors—conditions like type 2 diabetes and high waist circumference—experience a greater increase in risk for liver fibrosis than men with the same risk factors. The findings, emerging from research conducted at the Keck School of Medicine at the University of Southern California, add to a growing body of evidence suggesting that liver disease manifests differently in women, even when traditional risk profiles appear similar to those of men. Liver fibrosis, characterized by excessive scarring of the liver, can progress to cirrhosis, liver failure, and even liver cancer if left unaddressed.

Understanding Liver Fibrosis and Cardiometabolic Risk

Liver fibrosis isn’t a single disease, but rather the body’s response to chronic liver injury. Persistent inflammation, often caused by factors like viral hepatitis, excessive alcohol consumption, or non-alcoholic fatty liver disease (NAFLD), triggers the liver to produce excessive amounts of collagen, leading to scarring. The Mayo Clinic provides a comprehensive overview of the condition, its causes, and potential complications. Cardiometabolic risk factors, a cluster of conditions including obesity, high blood pressure, high cholesterol, and insulin resistance, are increasingly recognized as major contributors to NAFLD, and subsequently, liver fibrosis.

The study, which analyzed data from nearly 6,000 US adults participating in the National Health and Nutrition Examination Survey (2017-2020), used transient elastography to measure liver stiffness – a key indicator of fibrosis. Researchers found that the association between cardiometabolic risk factors and significant liver fibrosis (defined as a stiffness of 8.0 kPa or greater) was consistently stronger in women. The analysis accounted for factors like age, race, ethnicity, smoking habits, and alcohol consumption.

Sex-Specific Vulnerabilities: Why the Difference?

While the study doesn’t definitively explain why women appear more vulnerable, researchers suggest several potential mechanisms. Hormonal differences, genetic predispositions, and variations in body composition may all play a role. The published abstract in PubMed details the study’s objective to examine these sex differences. Jennifer Dodge, MPH, lead author of the study, emphasized in reporting by Bioengineer.org that women with high waist circumference and type 2 diabetes are at a “disproportionately elevated risk” compared to men. This suggests that standard risk assessments may underestimate the true burden of liver disease in women.

It’s important to note that men still experience a higher overall prevalence of liver fibrosis. Still, the study highlights that when women do develop fibrosis, it tends to progress more rapidly, even with seemingly comparable risk factors. This faster progression underscores the need for heightened awareness and potentially different management strategies.

Study Details and Limitations

The study’s cross-sectional design—analyzing data from a single point in time—means it cannot establish a causal relationship between cardiometabolic risk factors and liver fibrosis. It can only demonstrate an association. The study relied on self-reported data for some variables, which may be subject to recall bias. The population studied was also limited to US adults, so the findings may not be generalizable to other populations. The data were analyzed between July 2024 and December 2025, providing a relatively recent snapshot of the health landscape.

The study population included 2,992 women and 2,989 men, with a mean age of 49 and 47 years respectively. Racial and ethnic diversity was represented, though the majority of participants were non-Hispanic White (65.0% of women, 64.6% of men). This demographic breakdown is important to consider when interpreting the results, as racial and ethnic disparities in liver disease are well-documented.

What Does This Mean for Public Health?

The findings reinforce the growing recognition that a “one-size-fits-all” approach to liver disease prevention and management is inadequate. Current clinical guidelines often focus on traditional risk factors like alcohol consumption and viral hepatitis, but may not adequately address the unique vulnerabilities of women with cardiometabolic risk factors. Medical Xpress reported that this study is one of the first to specifically explore these sex differences.

This research doesn’t suggest that women should panic or undergo unnecessary screening. Instead, it emphasizes the importance of proactive cardiometabolic health management. Maintaining a healthy weight, engaging in regular physical activity, and following a balanced diet are crucial steps for everyone, but may be particularly important for women seeking to protect their liver health. Regular check-ups with a healthcare provider are also essential for monitoring risk factors and detecting early signs of liver disease.

Next Steps: Refining Risk Assessment and Targeted Interventions

The study’s authors call for further research to investigate the underlying mechanisms driving these sex-specific differences in liver fibrosis risk. Future studies should explore the role of hormones, genetics, and other biological factors. Research is needed to develop and evaluate targeted interventions specifically designed for women at high risk of liver disease. This includes exploring whether sex-specific thresholds for liver stiffness measurements are warranted, and whether different treatment strategies are more effective in women than in men. Ongoing surveillance of liver disease trends, particularly among women with cardiometabolic risk factors, will be crucial for informing public health policy and resource allocation.