Diet-related risk factors for leprosy: a case-control study

Area of Science:

• Nutritional Epidemiology
• Infectious Disease Epidemiology
• Socioeconomic Determinants of Health

Background:

• Recent studies link food shortage to leprosy, suggesting nutrient intake impacts immune response and disease progression.
• Understanding dietary differences in leprosy patients is crucial for public health interventions.
• Socioeconomic factors significantly influence health outcomes, including infectious diseases.

Purpose of the Study:

• To investigate dietary intake variations between newly diagnosed leprosy patients and control subjects.
• To identify specific dietary patterns associated with leprosy.
• To explore the relationship between food security, nutritional diversity, and leprosy risk.

Main Methods:

• A case-control study was conducted in a leprosy-endemic area of Bangladesh.
• Dietary intake was assessed using a 24-hour recall, calculating a Dietary Diversity Score (DDS).
• Socioeconomic status, Body Mass Index (BMI), and Household Food Insecurity Access Scale (HFIAS) were evaluated using logistic regression analysis.

Main Results:

• Leprosy patients (n=52) reported more frequent food shortages, lower dietary diversity, and higher household food insecurity compared to controls (n=100).
• Patients consumed fewer items from the 'Meat and fish' and 'Other fruits and vegetables' food groups.
• Lower per capita food expenditure, lower BMI, reduced DDS, and lack of household food stocks were significantly associated with increased leprosy risk.

Conclusions:

• Low-income families face challenges in affording nutrient-rich foods like meat, fish, and diverse fruits/vegetables.
• Nutrient deficiencies resulting from poor dietary intake may play a role in the development of clinical leprosy.
• Targeted nutritional support and improved food security are potential strategies for leprosy prevention and management.