Does Biotin Supplementation Lead to Weight Gain or Loss? - Nutrition

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Supplementing with vitamin B7 (biotin) will lead to weight gain or weight loss?


I saw online that one of the functions of vitamin B7 (Biotin) is to metabolize fats and assist in the synthesis of fatty acids.
Does this mean that supplementing with vitamin B7 will lead to weight gain (due to fatty acid synthesis) or weight loss (due to fat metabolism)? Thank you.

sansan, 10~19 year old female. Ask Date: 2018/07/17

Dr. Cai Xiuwen reply Nutrition


Hello, the most important factor in weight change is still the balance of calories.
Biotin participates in the metabolism of various nutrients in the body, including fatty acids, amino acids, and pyruvate.
Biotin acts as a coenzyme in the body, similar to a crucial screw needed for a car to operate, so its supplementation does not directly affect weight.
However, a deficiency can impact mood, cause dermatitis, fatigue, insomnia, and loss of appetite, among other issues.
This information is provided by Dietitian Tsai Hsiu-Wen from Nantou Hospital, Ministry of Health and Welfare.
Wishing you peace and health.

Reply Date: 2018/07/17

More Info


Biotin, also known as vitamin B7, is a water-soluble vitamin that plays a crucial role in various metabolic processes, particularly in the metabolism of carbohydrates, fats, and proteins. It is often touted for its benefits in promoting healthy hair, skin, and nails, but its role in weight management is less clear and often misunderstood.

To address your question directly: Biotin supplementation does not inherently lead to weight gain or loss. The confusion arises from its metabolic functions. Biotin is involved in the synthesis of fatty acids, which might suggest that it could contribute to weight gain. However, it also plays a role in the metabolism of fats, which can aid in weight loss. The key point is that biotin itself does not directly cause weight gain or loss; rather, it supports metabolic processes that can influence body composition.

When biotin is present in adequate amounts, it helps the body efficiently convert food into energy. This means that if you are consuming a balanced diet and engaging in regular physical activity, biotin can support your metabolism, potentially aiding in weight management. Conversely, if you are consuming excess calories, biotin will not prevent weight gain; it merely facilitates the metabolic processes.

It's important to note that biotin deficiency is rare, as it is found in a variety of foods, including eggs, nuts, seeds, and certain vegetables. Most people obtain sufficient biotin through their diet. Supplementation may be beneficial for individuals with specific deficiencies or certain health conditions, but for the average person, it is unlikely to have a significant impact on weight.

Moreover, biotin supplementation should not be viewed as a weight-loss solution. Effective weight management typically involves a combination of a balanced diet, regular physical activity, and lifestyle changes. Relying solely on supplements without addressing these fundamental aspects is unlikely to yield sustainable results.

If you are considering biotin supplementation for weight management or any other health benefits, it is advisable to consult with a healthcare professional. They can provide personalized advice based on your individual health needs and goals. Additionally, if you are experiencing unexplained weight changes or have concerns about your metabolism, a healthcare provider can help assess your overall health and recommend appropriate interventions.

In summary, while biotin plays a role in fat metabolism and fatty acid synthesis, it does not directly cause weight gain or loss. Its effects on weight are indirect and depend on various factors, including diet and physical activity. A holistic approach to weight management, focusing on nutrition and exercise, is essential for achieving and maintaining a healthy weight.

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