Vitamin A deficiency in Crohn's disease

Area of Science:

• Gastroenterology
• Nutritional Science
• Clinical Medicine

Background:

• Crohn's disease can lead to malabsorption and nutritional deficiencies.
• Vitamin A deficiency is a potential complication in patients with gastrointestinal disorders.

Purpose of the Study:

• To investigate the prevalence of vitamin A deficiency in patients with Crohn's disease.
• To identify risk factors associated with vitamin A deficiency in this population.

Main Methods:

• Assessed plasma retinol concentrations in 52 patients with Crohn's disease (outpatients and inpatients).
• Correlated retinol levels with body weight (percentage of ideal weight) and clinical status.
• Evaluated dark adaptation in patients with low retinol levels.

Main Results:

• Twenty-one percent of patients exhibited low plasma retinol concentrations.
• Inpatients, particularly those below 80% of ideal body weight, showed significantly lower retinol levels.
• Three inpatients with very low retinol (<0.8 mumol/l) demonstrated impaired dark adaptation, indicating night blindness.

Conclusions:

• Patients with extensive small bowel Crohn's disease and low body weight are at high risk for vitamin A deficiency.
• Plasma retinol measurement is recommended for at-risk Crohn's patients.
• Supplementation and correction of protein depletion are crucial for managing vitamin A deficiency in these patients.