Biotin
Biotin is involved in the following processes:
- Metabolism of carbohydrates, amino acids (building blocks of protein), and lipids (fats)
- Cell growth
Other names
- Vitamin B7 or B8
- Vitamin H ou Bw
- Coenzyme R
- Factor S or W factor
Sources
Biotin is found in the following foods:
- Liver
- Cooked eggs
- Legumes (including peanuts)
- Dairy products
- Brewer's yeast
- Salmon and other fish
- Nuts and seeds
- Certain fruits and vegetables (raspberries, avocados, sweet potatoes)
Though some intestinal bacteria produce biotin, it's still important to get it from dietary sources.
Wheat contains significant amounts of biotin, but it isn't absorbed.
Adequate intake (AI)
AI is the recommended average daily nutrient intake based on estimates of nutrient intake by groups of healthy people.
Adequate Intake of biotin
| Age | Men | Woman |
|---|---|---|
| 1-3 years old | 8 mcg | 8 mcg |
| 4-8 years old | 12 mcg | 12 mcg |
| 9-13 years old | 20 mcg | 20 mcg |
| 14-18 years old | 25 mcg | 25 mcg |
| Age | Men | Women |
|---|---|---|
| 19-50 years old | 30 mcg | 30 mcg |
| > 50 years old | 30 mcg | 30 mcg |
| Pregnancy | 30 mcg | |
| Breastfeeding | 35 mcg |
Deficiency
Deficiency is extremely rare. People with alcohol use disorder are at greater risk of deficiency. Some pregnant women may be at risk of developing a mild deficiency.
Biotin deficiency symptoms include the following:
- Hair loss and brittle nails
- Loss of appetite
- Dry skin and other skin problems
- Conjunctivitis (eye inflammation)
- Neurological problems, such as convulsions
- Developmental delay in infants
Toxicity
No reported cases of toxicity.
Supplements
Since biotin is readily available in food, supplements are not necessary. However, health problems and certain medications can increase the amount of biotin your body needs.
Biotin can be taken without regard to meals, but taking it with meals may be preferable.
Biotin supplements can affect certain lab tests, particularly tests for thyroid function. Inform your health care providers if you are taking any.
Always watch your diet:
it has a strong impact on your health!© Copyright Vigilance Santé
The patient information leaflets are provided by Vigilance Santé Inc. This content is for information purposes only and does not in any manner whatsoever replace the opinion or advice of your health care professional. Always consult a health care professional before making a decision about your medication or treatment.