Percent of the population with inadequate vitamin B12 intake

Definition

The percent of the population estimated to have inadequate vitamin B12 intake from their diets. Estimates are based on modelled dietary intake data and do not include fortification or supplementation.

Relevance

Micronutrient deficiencies are among the most common forms of malnutrition and most of the global population has inadequate intake of at least one micronutrient. Vitamin B12 is found exclusively in animal-source foods. It is important for red blood cell formation and a healthy nervous system. Deficiency can cause anemia, neurological damage, and cognitive impairment that may be irreversible if prolonged. Estimates of inadequate intakes can help identify where interventions are needed to improve people’s health.

Additional Information

Estimates are based on modelled dietary intake of scarce data and assume equal caloric intake across countries. This leads to an underestimate of inadequate intakes in countries with lower caloric intake and an overestimate of inadequate intakes in countries with higher caloric intake.