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Review Links Pork Consumption to Infection and Metabolic Health Risks
A comprehensive review by Ruhdiat and Ivan Adrian Montolalu of President University, Indonesia, and Demir of St George’s, University of London, United Kingdom, reports that pork consumption and pork exposure may be associated with increased risks of zoonotic infections, metabolic disorders, and certain neurological complications in specific contexts. Published in 2026 in the Jurnal Multidisiplin Madani (MUDIMA), the study analyzed scientific literature from around the world and combined findings through a meta-analysis. The researchers argue that advances in genomics, epidemiology, and biomedical science provide new perspectives on the health implications of pork consumption, complementing existing food safety and dietary discussions.
The findings arrive at a time when governments, healthcare systems, and consumers are increasingly focused on food safety, disease prevention, and the long-term health effects of dietary choices. The study also contributes to broader debates about zoonotic disease transmission, public health preparedness, and the relationship between diet and chronic disease.
Growing Interest in Food Safety and Diet-Related Health Risks
Food choices influence human health, cultural traditions, and religious practices. Around the world, researchers have devoted growing attention to understanding how different foods affect infectious disease risk, metabolism, and overall well-being.
Pork remains one of the most widely consumed meats globally. At the same time, pigs are recognized as hosts for a variety of viruses, bacteria, and parasites capable of infecting humans. Scientific interest has also increased because pigs share important physiological and genetic similarities with humans, making them valuable in biomedical research and organ transplantation studies.
According to the researchers, these characteristics make pork consumption and pig-related exposure important subjects for public health investigation.
How the Research Was Conducted
The study used a systematic literature review and meta-analysis, following internationally recognized PRISMA 2020 guidelines.
Researchers searched four major scientific databases:
- PubMed
- Scopus
- Web of Science
- Google Scholar
A total of 1,248 scientific records were initially identified. After removing duplicates and applying eligibility criteria, 36 peer-reviewed studies were included in the final analysis.
The selected studies examined several key topics:
- Zoonotic diseases associated with pigs and pork products
- Genetic similarities between pigs and humans
- Metabolic effects of pork consumption
- Neurological and neuroinflammatory implications
The researchers then used statistical methods to calculate pooled risk estimates across the available evidence.
Key Findings
The review identified several areas where pork exposure may be associated with elevated health risks.
Increased Risk of Zoonotic Infection
The meta-analysis found a pooled risk ratio (RR) of 1.42 for zoonotic infections associated with pork exposure.
The review identified several pathogens commonly associated with pigs and pork products, including:
- Taenia solium, linked to neurocysticercosis
- Trichinella spiralis, which causes trichinellosis
- Hepatitis E virus
- Streptococcus suis, associated with meningitis
The researchers note that pigs are considered one of the largest reservoirs of zoonotic pathogens among livestock species.
Metabolic Disease Risk Was Also Higher
The analysis found a pooled risk ratio of 1.28 for metabolic disease outcomes.
The review highlights biological mechanisms that may contribute to cardiometabolic risk, including:
- High saturated fat intake
- Cholesterol accumulation
- Inflammatory lipid pathways
- Changes in the gut microbiome
Researchers note that excessive consumption of red meat, including pork, has previously been associated with conditions such as cardiovascular disease, obesity, insulin resistance, and metabolic syndrome.
Neurological Concerns Require Further Investigation
Some neurological effects were linked to infectious diseases, particularly neurocysticercosis, a parasitic infection that can affect the central nervous system and contribute to epilepsy.
The review additionally discusses possible biological pathways involving:
- Neuroinflammation
- Immune system activation
- Gut-brain interactions
- Microbiome-related mechanisms
However, the researchers emphasize that direct evidence connecting pork consumption to mental health outcomes remains limited and requires further study.
Genetic Findings Raise Scientific Questions
One of the review’s most discussed topics involves Porcine Endogenous Retroviruses (PERVs), viral genetic elements found within the pig genome.
Laboratory studies have shown that some PERV variants can infect human cells under experimental conditions. While there is currently limited evidence demonstrating real-world transmission through food consumption, the researchers argue that the topic deserves continued monitoring and investigation.
These findings are particularly relevant in fields such as xenotransplantation, where pig tissues and organs are being explored for medical use.
Important Limitations
The authors caution against interpreting the findings as proof that pork consumption directly causes disease.
Most of the studies included in the review were observational, meaning they can identify associations but cannot establish definitive cause-and-effect relationships.
The researchers also reported moderate heterogeneity among studies, reflecting differences in methodology, populations, and measurement approaches.
Other factors such as lifestyle, socioeconomic status, healthcare access, sanitation, cooking practices, and overall dietary patterns may influence observed health outcomes.
Implications for Public Health
The study highlights several practical implications for governments, healthcare organizations, and consumers.
The researchers recommend:
- Stronger food safety monitoring systems
- Enhanced zoonotic disease surveillance
- Better pathogen detection throughout food supply chains
- Greater public awareness of safe food handling and cooking practices
- Continued research into diet-related health risks
The review also supports a broader “One Health” approach that recognizes the interconnected nature of human health, animal health, and environmental conditions.
For policymakers, the findings reinforce the importance of preventing foodborne disease outbreaks through coordinated monitoring and regulatory oversight.
For consumers, the study underscores the value of proper food preparation, balanced nutrition, and evidence-based dietary decision-making.
Academic Perspective
According to Ruhdiat and Ivan Adrian Montolalu of President University, together with Demir of St George’s, University of London, current scientific evidence suggests that pork exposure may be associated with increased risks of zoonotic infection, inflammatory metabolic processes, and certain neurological complications under specific conditions. The researchers emphasize that these findings should be viewed as part of a broader biomedical discussion involving genetics, epidemiology, nutrition, and public health.
They conclude that further interdisciplinary research is needed to clarify the relationships between pork consumption, disease risk, and long-term health outcomes.
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