Dietary Intake and Food Sources of Niacin, Riboflavin, Thiamin and Vitamin B-6 in a Representative Sample of the Spanish Population. The ANIBES Study

Thiamin, riboflavin, niacin, and vitamin B-6 are essential micronutrients that are mainly involved in energy metabolism; they may prevent the occurrence of developmental abnormalities and chronic degenerative and neoplastic diseases. The aim was to analyze dietary intake and food sources of those four nutrients in subjects (n = 2009) aged 9-75 years old from the Spanish ANIBES (Anthropometric data, macronutrients and micronutrients intake, practice of physical activity, socioeconomic data and lifestyles in Spain) study. Dietary data were collected by means of a validated, photo-based three-day dietary food record. Underreporting was analysed according to the European Food and Safety Authority (EFSA, Parma, Italy) protocol. Mean (max-min) reported intake for the whole population of thiamin was 1.17 +/- 0.02 mg/day, (0.30-3.44 mg/day), riboflavin 1.44 +/- 0.02 mg/day, (0.37-3.54 mg/day), niacin 29.1 +/- 0.2 mg/day (6.7-109 mg/day), and vitamin B-6 1.54 +/- 0.01 mg/day (0.28-9.30 mg/day). The main sources of intake for thiamin, niacin, and vitamin B-6 were meat and meat products, and for riboflavin were milk and dairy products. An elevated percentage of the Spanish ANIBES population meets the EFSA recommended intakes for thiamin (71.2%), riboflavin (72.0%), niacin (99.0%), and vitamin B-6 (77.2%).