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Biotin | Benefits, Deficiency, Health, Sources

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Nutrition Specialist, Esra Kozan

Written and fact checked by Nutrition Specialist, Esra Kozan on August 25, 2023.

What is Biotin?

Biotin, also known as Vitamin B7 or Vitamin H, is a water-soluble vitamin that plays a crucial role in the metabolism of carbohydrates, fats, and proteins. It is essential for the health care and growth of hair, skin, and nails. Biotin is found in a variety of foods, including eggs, dairy products, nuts, and vegetables. Biotin plays a crucial role in the metabolism of carbohydrates, fats, and amino acids, and it is involved in the synthesis of certain enzymes and hormones.

What Does Biotin Do?

Biotin is a vitamin that dissolves in water and plays an active role in various metabolic processes within the body. It helps break down macronutrients such as carbohydrates, proteins, and fats. 

In addition to being popular in the beauty and wellness industry for promoting healthy hair, skin, and nails, biotin is also essential for maintaining healthy nerve function. It contributes to the conversion of these macronutrients, which is crucial for energy production. This guide explores the many important functions of biotin, emphasizing its pivotal role in optimizing our overall health and vitality.

a plate and a cracked eggs

What Foods Contain Biotin?

Biotin is found in a variety of foods, including:

  • Egg yolks
  • Dairy products such as milk, cheese, and yogurt
  • Nuts, including almonds, peanuts, and walnuts
  • Legumes such as beans and lentils
  • Leafy green vegetables such as spinach and broccoli
  • Whole grains such as oats and barley

Biotin, a water-soluble vitamin essential for overall health, is widely available in various foods in the United States, including eggs, dairy products, nuts, and vegetables.

How Much Biotin is Needed Daily?

The Recommended Dietary Allowance (RDA) for biotin is 30 mcg per day for adults. However, biotin deficiencies are rare, and most people get enough biotin from their diet. If you are considering taking a biotin supplement, it is important to speak with a healthcare provider to determine the appropriate dosage for your individual needs. 

High doses of biotin may be considered as a supplement option for some individuals, but it's crucial to consult a healthcare provider to determine the potential effects of biotin and the appropriate dosage for their individual needs. Supporting the Food and Drug Administration (FDA) guidelines, it is essential to consult with a healthcare provider before considering high doses of biotin as a supplement.

Is Biotin Used Every Day?

Incorporating Biotin in our daily diet or through supplements is essential to maintain adequate levels. Biotin plays a crucial role in various essential bodily functions, so it's important to have a consistent daily intake for optimal health. 

The recommended daily intake of Biotin varies depending on age, gender, and specific health conditions. For most adults, a daily dose of 30 mcg to 35  micrograms is enough. Pregnant or breastfeeding individuals, as well as those with certain medical conditions, may need higher Biotin intake. 

Consulting a healthcare professional can help determine the appropriate daily dosage tailored to individual needs. Whether through a balanced diet or supplement, integra

ting Biotin into our daily routine will ensure we harness its numerous benefits and support our overall well-being.

What is Biotin Deficiency?

When the body lacks the necessary amount of biotin, it results in a condition known as biotin deficiency. This condition can cause several troublesome symptoms because biotin is essential for various metabolic processes. It affects the health of hair, skin, and nails, leading to brittle hair, rashes, and nail abnormalities. 

Biotin also plays a vital role in the energy production and metabolism of carbohydrates, proteins, and fats. Hence, a deficiency can cause muscle pain and fatigue. Certain individuals are at higher risk of biotin deficiency, including pregnant women, those with genetic disorders, and excessive alcohol consumption. It is crucial to recognize the symptoms and address the deficiency promptly to prevent further health complications. 

Biotinidase deficiency is a rare genetic condition that can lead to reduced levels of biotin in the body and cause various health issues. Marginal biotin responsive basal ganglia disease is a rare condition associated with biotin deficiency that affects certain individuals, including those with genetic disorders.

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What are the Symptoms of Biotin Deficiency?

Certain groups of people are at a greater risk of experiencing biotin deficiency. These include expectant or nursing mothers, individuals with specific genetic conditions, and those who regularly consume undercooked or raw egg whites. The latter contains a protein called avidin, which hinders biotin absorption. To maintain good health and well-being, it's essential to recognize the symptoms of biotin deficiency early and take steps to address it. Below are some common indicators of biotin deficiency:

  • Brittle and thinning hair
  • Dry and itchy skin
  • Brittle nails
  • Fatigue
  • Muscle pain
  • Impaired cognitive function

A marginal biotin deficiency can lead to subtle symptoms, such as mild hair thinning and dry skin. Individuals can maintain optimal biotin levels and support their overall health by being aware of these signs and taking necessary steps.

What are the Causes of Biotin Deficiency?

Biotin deficiency can happen for various reasons, which include dietary factors and specific medical conditions. One of the most common causes is a diet that lacks biotin-rich foods. Foods like eggs, nuts, seeds, and certain vegetables are rich in this water-soluble vitamin. 

People who consume raw egg whites regularly may also be at risk, as egg whites contain avidin, a protein that hinders biotin absorption. Besides, certain genetic disorders affecting biotin metabolism can lead to deficiency. Prolonged antibiotic use and some medications may also interfere with biotin production in the gut, contributing to deficiency. 

Pregnant or breastfeeding women have higher biotin requirements, making them more vulnerable to deficiency. By understanding these causes and taking necessary precautions, individuals can maintain optimal biotin levels and ensure their overall health and well-being remain at their best.

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How Reversible is Biotin Deficiency?

One of the most common and straightforward methods is to include biotin-rich foods in your diet, like eggs, nuts, seeds, and leafy greens. However, if you use dietary supplements or don't consume enough biotin through food alone, you can consider taking biotin supplements, which are available over-the-counter and can provide the necessary daily dose of biotin that you need. 

Healthcare professionals may also recommend changes to medication regimens that might interfere with biotin absorption or suggest reducing the consumption of raw egg whites, which contain avidin. It's important to monitor your Biotin levels and symptoms regularly to determine if your personal plan is working. By being proactive and seeking professional guidance, you can successfully reverse biotin deficiency, promoting overall well-being and vitality. 

Frequently Asked Questions 

Can too much Biotin cause hair loss?

While biotin is often associated with promoting healthy hair, skin, and nails, excessive intake of biotin is not necessarily beneficial and could potentially have unintended effects. There have been anecdotal reports of people experiencing hair loss or hair shedding after taking very high doses of biotin supplements. This phenomenon is not well understood and more research is needed to establish a clear link between high biotin intake and hair loss.

Is Biotin a Vitamin H or B7?

Biotin, also referred to as Vitamin H or B7, is a soluble vitamin that plays a vital role in metabolizing fats, carbohydrates, and amino acids.

Does biotin have side effects?

When taken at the recommended dosage, biotin is typically safe. However, some people may experience mild side effects such as nausea, cramping, or digestive problems.

Does biotin affect kidneys?

Biotin is generally considered safe for most people when taken at recommended doses, and there is no strong evidence to suggest that biotin affects the kidneys in a negative way. Biotin is a water-soluble vitamin, which means that any excess biotin that the body doesn't use is typically excreted through urine. However, as with any dietary supplement, it's important to use biotin in moderation and follow the recommended dosage guidelines. 

When should you not take biotin?

If you take medications that interact with biotin, it's important to speak with your healthcare provider before taking biotin supplements. Pregnant or breastfeeding women should also seek medical advice before supplementing with biotin.

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img author
Nutrition Specialist, Esra Kozan

Written and fact checked by Nutrition Specialist, Esra Kozan on August 25, 2023.

Table of Contents

What is Biotin?

What Does Biotin Do?

What Foods Contain Biotin?

How Much Biotin is Needed Daily?

Is Biotin Used Every Day?

What is Biotin Deficiency?

What are the Symptoms of Biotin Deficiency?

What are the Causes of Biotin Deficiency?

How Reversible is Biotin Deficiency?

FAQs

Can Too Much Biotin Cause Hair Loss?

While biotin is often associated with promoting healthy hair, skin, and nails, excessive intake of biotin is not necessarily beneficial and could potentially have unintended effects. There have been anecdotal reports of people experiencing hair loss or hair shedding after taking very high doses of biotin supplements. This phenomenon is not well understood and more research is needed to establish a clear link between high biotin intake and hair loss.

Is Biotin a Vitamin H or B7?

Biotin also referred to as Vitamin H or B7, is a soluble vitamin that plays a vital role in metabolizing fats, carbohydrates, and amino acids.

Does Biotin Have Side Effects?

When taken at the recommended dosage, biotin is typically safe. However, some people may experience mild side effects such as nausea, cramping, or digestive problems.

Does Biotin Affect Kidneys?

Biotin is generally considered safe for most people when taken at recommended doses, and there is no strong evidence to suggest that biotin affects the kidneys in a negative way. Biotin is a water-soluble vitamin, which means that any excess biotin that the body doesn't use is typically excreted through urine. However, as with any dietary supplement, it's important to use biotin in moderation and follow the recommended dosage guidelines.

When Should You Not Take Biotin?

If you take medications that interact with biotin, it's important to speak with your healthcare provider before taking biotin supplements. Pregnant or breastfeeding women should also seek medical advice before supplementing with biotin.

Article Review History

  • References
  • https://ods.od.nih.gov/factsheets/Biotin-HealthProfessional/

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