Risk factors associated with nephrolithiasis: a case-control study in China

Area of Science:

• Nephrology
• Epidemiology
• Public Health

Background:

• Nephrolithiasis (kidney stones) is a complex condition with multifactorial origins.
• Understanding gender-specific risk factors is crucial for effective prevention strategies.

Purpose of the Study:

• To investigate the association between psychological, behavioral, dietary, and biochemical factors and nephrolithiasis in a Chinese population.
• To identify gender-specific risk and protective factors for kidney stone formation.

Main Methods:

• A case-control study involving 725 nephrolithiasis patients and 553 controls.
• Data collection included questionnaires on lifestyle factors and physical/biochemical examinations.
• Statistical analysis using odds ratios (OR) and 95% confidence intervals (CI) to assess risk associations.

Main Results:

• For men, higher education was associated with lower nephrolithiasis risk (OR=0.6).
• Increased waist-to-hip ratio (hypso-WHR >0.9), overexercise, and negative life events were linked to higher risk in men (ORs 2.2, 2.1, 2.2 respectively).
• For women, higher fluid intake was protective (OR=0.6), while abnormal blood pressure and blood lipids increased risk.

Conclusions:

• Nephrolithiasis risk is influenced by distinct factors in men and women.
• Lifestyle modifications including adequate fluid intake, maintaining healthy blood pressure and lipids, avoiding overexercise, and managing stress may aid in nephrolithiasis prevention.