什么是B7分子_百度知道

Also known as vitamin B7, biotin is a powerful compound that offers many health benefits beyond clearing your skin and helping your nails grow. Foods contain vitamins, minerals, dietary fiber, and other components that benefit health. However, supplements that contain biotin above recommended amounts may cause false results in some lab tests, including those that measure levels of certain hormones, like thyroid hormone.

Hypothyroidism (Underactive Thyroid)

As a water-soluble vitamin, biotin is not stored in the body, instead being secreted through urine, so it must be provided in our daily diet. Some evidence has shown that those suffering from diabetes may be susceptible to biotin deficiency. Vitamin B7 can aid in caring for thinning hair and brittle nails, especially in those suffering from biotin deficiency.

• Organ meats are considered a great source of vitamin B7, especially beef liver and kidney.
• When taking a supplement, it’s important not to take too much.
• For biotin, however, there is no upper limit because the adverse effects of high biotin intake have not been determined.
• Various nuts and nut butter are packed with healthy fats, protein, and vitamin B7.
• Relatively low levels of biotin have also been reported in the urine or plasma of patients who have had a partial gastrectomy or have other causes of achlorhydria, as well as burn patients, elderly individuals, and athletes.
• Neonatal screening for biotinidase deficiency started in the United States in 1984, which as of 2017 was reported as required in more than 30 countries.

You should be able to get all the riboflavin you need from your daily diet. UV light can destroy riboflavin, so ideally these foods should be kept out of direct sunlight. If you take supplements, do not take too much as this might be harmful. Thiamin cannot be stored in the body, so you need it https://www.b7.casino/ in your diet every day. You should be able to get all the thiamin you need from your daily diet. A monthly update filled with nutrition news and tips from Harvard experts—all designed to help you eat healthier.Sign up

Egg yolk

Last, the biotinylated protein can be eluted from the beads with excess free biotin. Second, the sample is incubated with avidin bound to beads, then rinsed, removing all unbound proteins, while leaving only the biotinylated protein bound to avidin. The choice of which chemical modification to use is responsible for the biotin reagent binding to a specific protein. First, the chemically modified biotin reagents are bound to the targeted compounds in a solution via a process called biotinylation.

Food sources

Biotin is often added to multivitamins and hair/nail/skin supplements. An RDA (Recommended Dietary Allowance) does not exist for biotin because there is not enough evidence to suggest a daily amount needed by most healthy people. It is a water-soluble B vitamin found naturally in some foods and also in supplements. Results after 4–6 months from supplementing biotin at 20 mg/day into daily diet reduces the risk of lameness. A review of the fingernails literature reported brittle nail improvement as evidence from two pre-1990 clinical trials that had administered an oral dietary supplement of 2.5 mg/day for several months, without a placebo control comparison group.
Biotin deficiency is very rare in the United States. Biotin helps turn the carbohydrates, fats, and proteins in the food you eat into the energy you need. For more in-depth information, see our health professional fact sheet. Women who cannot get pregnant and men should be able to get all the folate they need by eating a varied and balanced diet.

• Chromium picolinate and biotin combination improves glucose metabolism in treated, uncontrolled overweight to obese patients with type 2 diabetes.
• Taking 0.9mg or less a day of biotin in supplements is unlikely to cause any harm.
• These foods are also high in other essential B vitamins and nutrients, making them a good nutrient-rich addition to your diet.
• Life-threatening eosinophilic pleuropericardial effusion related to vitamins B5 and H.
• Biotin exists in a wide variety of foods, which helps explain why a deficiency in the vitamin is fairly rare.
• In a few small studies, some people with thin and brittle nails who took high doses of biotin had harder nails.

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Some evidence shows blood biotin levels may be lower in people with diabetes. A biotin deficiency may disrupt blood sugar, or glucose, regulation. That said, it is important to consult a healthcare professional before taking supplements during pregnancy or breastfeeding.
Learn how to recognize the early signs of vitamin C deficiency and how you can treat and prevent it. Discover whether drinking vitamin water is as healthy as it claims and how this drink may affect your overall well-being. Discover the benefits of omega-3 supplementation, including heart health, joint health, and more. A team of medical professionals can guide you on healthy habits — all from the comfort of your home. If you’re looking for more information on how to improve your vitamin intake to support your overall well-being better, LifeMD has got you covered.

Dietary recommendations

Taking 1mg or less a day of folic acid supplements is unlikely to cause any harm. Taking 0.9mg or less a day of biotin in supplements is unlikely to cause any harm. Do not take more than 10mg of vitamin B6 a day in supplements unless advised to by a doctor. Taking 200mg or less a day of pantothenic acid in supplements is unlikely to cause any harm.

Symptoms of deficiency

The vitamin’s influence on the skin may stem from its effect on fat metabolism. Some people also believe that biotin may help improve psoriasis. This level of deficiency may affect a person’s health, but not enough to cause noticeable symptoms. Changing the diet and other lifestyle factors can help improve nail health, as can some commercial products.