Vitamin B7 // Biotin

Supply Situation

National nutrition surveys for some European countries have shown estimated mean dietary biotin intakes for adults of 36 micrograms (mcg)/day (26). In adult men and women below 65 years, mean/median intakes ranged from 26 to 50 mcg/day, while mean/median intakes between 24 and 43 mcg/day were reported for older adult men and women.

In the U.K., the proportion of those not meeting current U.K. national recommendations for B vitamins does not generally exceed 10% (27). More recent recommendations have proposed an intake of 50 mcg/day for biotin, which is currently not met by 74% of men and 90% of women in the U.K., although biotin intake recommendations remain vague.

In Ireland, the mean intake for most B vitamins is generally higher than recommended intake, although for vitamin B7 and vitamin B5, a significant proportion of men and women would not meet recent recommendations for these vitamins (28).

Large national nutrition surveys in the U.S. were unable to estimate biotin intake due to a lack of data regarding biotin content of food.

Smaller studies estimate average daily intakes of biotin to be between 40 to 60 mcg/day in adults (1).

Authored by Dr Peter Engel in 2010, reviewed and revised by Ines Warnke on 28.06.2017

This site uses cookies to store information on your computer.

Learn more