Risk groups for vitamin B1 deficiency include individuals with:
- Deficiency and malnutrition, for example, a diet frequently high in protein and carbohydrates.
- Chronic alcohol abuse
- Malabsorption (Crohn’s disease, sprue)
- High black tea consumption or intake of drugs, especially antacids (both black tea and antacids inhibit the absorption of thiamine).
- Chronic hemodialysis
- Diabetic acidosis
- Severe acute liver dysfunction
- Genetic defects of thiamine metabolism.
- Pregnant and breastfeeding women
Note on the state of supply (National Nutrition Survey II 2008).
21% of men and 32% of women do not reach the recommended daily intake.In women, the proportion of undersupplied increases from 25% at age 14-18 years to 40% at age 65-80 years.
