These coenzymes are essential in redox reactions that occur in catabolic processes such as glycolysis and cellular respiration, and in anabolic processes such as the synthesis of fatty acids and steroid hormones.
Vitamin B3 requirement in children and adolescents
In the early years of life, the need for vitamin B3 gradually increases from 5 mg (aged 1-3) to 6 mg at the age of 4-6. For children aged 7-12, the need for niacin is 9 mg. In adolescence (aged 13-18), the need is the same as for adults (11 mg for girls and 12 mg for boys)
Vitamin B3 requirement in adults
Daily requirements for adult men are slightly higher than for women (12 mg vs. 11 mg). However, for women, the requirement increases during pregnancy and breastfeeding - to 14 and 13 mg, respectively.
Recommended intake of vitamin B3 - children and adolescents
For children aged 1-3 years, the recommended daily intake is 6 mg, increasing to 6 mg at ages 4-6, and to 12 mg for children aged 7 to 12. During adolescence (13-18 years), the recommended daily intake of vitamin B3 is 16 mg for boys and 14 mg for girls.
Recommended intake of vitamin B3 - adults
The recommended daily intake of vitamin B3 is 16 mg for adult men and 14 mg for women. For pregnant and breastfeeding women, the recommended intake is 18 and 17 mg, respectively.
Occurrence of vitamin B3 in food
Vitamin B3 is found in many foods, including meat (especially poultry and pork), fish, liver, and whole grains. Peanuts are also a good source of niacin. This vitamin can be synthesized from tryptophan, which is found in protein.
