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Sức khỏe tóc

Hỗ trợ mọc tóc khỏe mạnh với các dưỡng chất như Biotin, sắt, kẽm và Vitamin D.

Hoạt chất khuyến nghị

Biotin

Biotin, a B vitamin, is an essential nutrient that is naturally present in some foods and available as a dietary supplement. This water-soluble vitamin is a cofactor for five carboxylases (propionyl-CoA carboxylase, pyruvate carboxylase, methylcrotonyl-CoA carboxylase [MCC], acetyl-CoA carboxylase 1, and acetyl-CoA carboxylase 2) that catalyze critical steps in the metabolism of fatty acids, glucose, and amino acids [1-51. Institute of Medicine. Food and Nutrition Board. Dietary Reference Intakes: Thiamin, Riboflavin, Niacin, Vitamin B6, Folate, Vitamin B12, Pantothenic Acid, Biotin, and Choline. Washington, DC: National Academy Press; 1998.2. Mock DM. Biotin. In: Ross AC, Caballero B, Cousins RJ, Tucker KL, Ziegler TR, eds. Modern Nutrition in Health and Disease. 11th ed. Baltimore, MD: Lippincott Williams & Wilkins; 2014:390-8.3. Zempleni J, Wijeratne SSK, Kuroishi T. Biotin. In: Erdman JW, Macdonald IA, Zeisel SH, eds. Present Knowledge in Nutrition. 10th ed. Washington, DC: Wiley-Blackwell; 2012:359-74.4. Pacheco-Alvarez D, Solórzano-Vargas RS, Del Río AL. Biotin in metabolism and its relationship to human disease. Arch Med Res 2002;33:439-47. [PubMed abstract]5. Staggs CG, Sealey WM, McCabe BJ, Teague AM, Mock DM. Determination of the biotin content of select foods using accurate and sensitive HPLC/avidin binding. Journal of food composition and analysis: an official publication of the United Nations University, International Network of Food Data Systems 2004;17:767-76. [PubMed abstract]]. Biotin also plays key roles in histone modifications, gene regulation (by modifying the activity of transcription factors), and cell signaling [33. Zempleni J, Wijeratne SSK, Kuroishi T. Biotin. In: Erdman JW, Macdonald IA, Zeisel SH, eds. Present Knowledge in Nutrition. 10th ed. Washington, DC: Wiley-Blackwell; 2012:359-74.]. Most biotin in foods is bound to protein, although some dietary biotin is in the free form [11. Institute of Medicine. Food and Nutrition Board. Dietary Reference Intakes: Thiamin, Riboflavin, Niacin, Vitamin B6, Folate, Vitamin B12, Pantothenic Acid, Biotin, and Choline. Washington, DC: National Academy Press; 1998.,33. Zempleni J, Wijeratne SSK, Kuroishi T. Biotin. In: Erdman JW, Macdonald IA, Zeisel SH, eds. Present Knowledge in Nutrition. 10th ed. Washington, DC: Wiley-Blackwell; 2012:359-74.,44. Pacheco-Alvarez D, Solórzano-Vargas RS, Del Río AL. Biotin in metabolism and its relationship to human disease. Arch Med Res 2002;33:439-47. [PubMed abstract],66. Said HM. Biotin: biochemical, physiological and clinical aspects. Subcell Biochem 2012;56:1-19. [PubMed abstract]]. Gastrointestinal proteases and peptidases break down the protein-bound forms of ingested biotin into biocytin and biotin-oligopeptides, which undergo further processing by biotinidase, an enzyme, in the intestinal lumen to release free biotin [66. Said HM. Biotin: biochemical, physiological and clinical aspects. Subcell Biochem 2012;56:1-19. [PubMed abstract]]. The free biotin is then absorbed in the small intestine, and most biotin is stored in the liver [11. Institute of Medicine. Food and Nutrition Board. Dietary Reference Intakes: Thiamin, Riboflavin, Niacin, Vitamin B6, Folate, Vitamin B12, Pantothenic Acid, Biotin, and Choline. Washington, DC: National Academy Press; 1998.,33. Zempleni J, Wijeratne SSK, Kuroishi T. Biotin. In: Erdman JW, Macdonald IA, Zeisel SH, eds. Present Knowledge in Nutrition. 10th ed. Washington, DC: Wiley-Blackwell; 2012:359-74.,66. Said HM. Biotin: biochemical, physiological and clinical aspects. Subcell Biochem 2012;56:1-19. [PubMed abstract]]. A limited number of reliable indicators of biotin status is available [77. Eng WK, Giraud D, Schlegel VL, Wang D, Lee BH, Zempleni J. Identification and assessment of markers of biotin status in healthy adults. Br J Nutr 2013;110:321-9. [PubMed abstract]]. In healthy adults, the concentration of biotin is 133–329 pmol/L in serum and 18–127 nmol/24 hours in urine [22. Mock DM. Biotin. In: Ross AC, Caballero B, Cousins RJ, Tucker KL, Ziegler TR, eds. Modern Nutrition in Health and Disease. 11th ed. Baltimore, MD: Lippincott Williams & Wilkins; 2014:390-8.]. Abnormally low urinary excretion of biotin is an indicator of biotin deficiency, as is abnormally high excretion of 3-hydroxyisovaleric acid (higher than 3.3 mmol/mol creatinine) or 3-hydroxyisovalerylcarnitine (higher than 0.06 mmol/mol creatinine) resulting from reduced activity of MCC [22. Mock DM. Biotin. In: Ross AC, Caballero B, Cousins RJ, Tucker KL, Ziegler TR, eds. Modern Nutrition in Health and Disease. 11th ed. Baltimore, MD: Lippincott Williams & Wilkins; 2014:390-8.,77. Eng WK, Giraud D, Schlegel VL, Wang D, Lee BH, Zempleni J. Identification and assessment of markers of biotin status in healthy adults. Br J Nutr 2013;110:321-9. [PubMed abstract],88. Mock DM, Stratton SL, Horvath TD, Bogusiewicz A, Matthews NI, Henrich CL, et al. Urinary excretion of 3-hydroxyisovaleric acid and 3-hydroxyisovaleryl carnitine increases in response to a leucine challenge in marginally biotin-deficient humans. J Nutr 2011;141:1925-30. [PubMed abstract]]. The most reliable individual markers of biotin status, including deficiency and sufficiency, are biotinylated MCC and propionyl-CoA carboxylase in white blood cells [77. Eng WK, Giraud D, Schlegel VL, Wang D, Lee BH, Zempleni J. Identification and assessment of markers of biotin status in healthy adults. Br J Nutr 2013;110:321-9. [PubMed abstract]]. Oral administration of large doses of biotin increases serum concentrations of biotin and its metabolites [11. Institute of Medicine. Food and Nutrition Board. Dietary Reference Intakes: Thiamin, Riboflavin, Niacin, Vitamin B6, Folate, Vitamin B12, Pantothenic Acid, Biotin, and Choline. Washington, DC: National Academy Press; 1998.,99. Li D, Radulescu A, Shrestha RT, Root M, Karger AB, Killeen AA, et al. Association of biotin ingestion with performance of hormone and nonhormone assays in healthy adults. JAMA 2017;318:1150-60. [PubMed abstract]]. However, serum concentrations of biotin and its catabolites are not good indicators of marginal biotin deficiency because they do not decrease sufficiently in people with marginal biotin deficiency for these changes to be detectable with existing tests [33. Zempleni J, Wijeratne SSK, Kuroishi T. Biotin. In: Erdman JW, Macdonald IA, Zeisel SH, eds. Present Knowledge in Nutrition. 10th ed. Washington, DC: Wiley-Blackwell; 2012:359-74.,1010. Zempleni J, Wijeratne SSK, Hassan YI. Biotin. Biofactors 2009;35:36-46. [PubMed abstract]].

FDA: 31,205 Xem chi tiết →

Iron

This section focuses on the role of iron in IDA in pregnant women, infants, and toddlers as well as in anemia of chronic disease.

FDA: 76,883 Xem chi tiết →

Silica

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Vitamin D

The FNB committee that established DRIs for vitamin D found that the evidence was inadequate or too contradictory to conclude that the vitamin had any effect on a long list of potential health outcomes (e.g., on resistance to chronic diseases or functional measures), except for measures related to bone health. Similarly, in a review of data from nearly 250 studies published between 2009 and 2013, the Agency for Healthcare Research and Quality concluded that no relationship could be firmly established between vitamin D and health outcomes other than bone health [6969. Newberry SJ, Chung M, Shekelle PG, Booth MS, Liu JL, Maher AR, et al. Vitamin D and calcium: A systematic review of health outcomes (update). Evidence Report/Technology Assessment No. 217. (Prepared by the Southern California Evidence-based Practice Center under Contract No. 290- 2012-00006-I.) AHRQ Publication No. 14-E004-EF. Rockville, MD: Agency for Healthcare Research and Quality. September 2014.]. However, because research has been conducted on vitamin D and numerous health outcomes, this section focuses on seven diseases, conditions, and interventions in which vitamin D might be involved: bone health and osteoporosis, cancer, cardiovascular disease (CVD), depression, multiple sclerosis (MS), type 2 diabetes, and weight loss. Most of the studies described in this section measured serum 25(OH)D levels using various methods that were not standardized by comparing them to the best methods. Use of unstandardized 25(OH)D measures can raise questions about the accuracy of the results and about the validity of conclusions drawn from studies that use such measures and, especially, from meta-analyses that pool data from many studies that use different unstandardized measures [55. Sempos CT, Heijboer AC, Bikle DD, Bollerslev J, Bouillon R, Brannon PM, et al. Vitamin D assays and the definition of hypovitaminosis D. Results from the First International Conference on Controversies in Vitamin D. Br J Clin Pharmacol 2018;84:2194-207. [PubMed abstract],99. Sempos CT, Binkley N. 25-hydroxyvitamin D assay standardisation and vitamin D guidelines paralysis. Public Health Nutrition 2020;23:1153-64. [PubMed abstract],7070. Sempos CT, Carter GD, Binkley NC. 25-hydroxyvitamin D assays: Standardization, guidelines, problems, and interpretation. Pages 939-57 in Feldman D, Pike JW, Bouillon R, Giovannucci E, Goltzman D, Hewison M, eds. Vitamin D, Volume 1: Biochemistry, Physiology and Diagnostics, Fourth Edition. Elsevier, 2018.]. More information about assay standardization is available from the Vitamin D Standardization Program webpage.

FDA: 694 Xem chi tiết →

Zinc

This section focuses on the following diseases and disorders in which zinc might play a role: the common cold, pneumonia in children, HIV in children and adults, acute childhood diarrhea (which often results from infections), age-related macular degeneration (AMD), and type 2 diabetes. For information on zinc and COVID-19, see Dietary Supplements in the Time of COVID-19.

FDA: 38,971 Xem chi tiết →

Sản phẩm phù hợp

Câu hỏi thường gặp

Bổ sung bao nhiêu Biotin mỗi ngày là đủ?
Liều lượng Biotin khuyến nghị có thể thay đổi tùy thuộc vào nhu cầu cá nhân và tình trạng sức khỏe. Việc bổ sung quá liều có thể không mang lại thêm lợi ích và đôi khi can thiệp vào kết quả xét nghiệm y khoa. Tham khảo ý kiến bác sĩ hoặc chuyên gia dinh dưỡng để được tư vấn liều lượng phù hợp nhất cho bạn.
Tôi nên bổ sung sắt từ thực phẩm hay viên uống?
Việc bổ sung sắt từ thực phẩm (thịt đỏ, rau bina, các loại đậu) luôn là ưu tiên hàng đầu vì cơ thể dễ hấp thu và an toàn. Nếu bạn nghi ngờ mình bị thiếu sắt hoặc đã được bác sĩ chẩn đoán, việc dùng viên bổ sung sắt cần có sự chỉ định và theo dõi của bác sĩ để tránh nguy cơ thừa sắt, có thể gây hại cho sức khỏe.
Bao lâu thì thấy hiệu quả khi bổ sung dưỡng chất cho tóc?
Tóc mọc theo chu kỳ tự nhiên, thường chậm hơn so với các mô khác trong cơ thể. Thông thường, bạn có thể cần kiên trì bổ sung đầy đủ dưỡng chất trong khoảng 3 đến 6 tháng để nhận thấy những cải thiện rõ rệt về độ dày, độ chắc khỏe và giảm rụng tóc. Hãy kiên nhẫn và duy trì thói quen chăm sóc tóc đều đặn. Tham khảo ý kiến bác sĩ nếu tình trạng rụng tóc kéo dài hoặc nặng hơn.

Thông tin trên chỉ mang tính chất tham khảo, không thay thế cho lời khuyên y tế chuyên nghiệp. Luôn tham khảo ý kiến bác sĩ hoặc dược sĩ trước khi sử dụng thực phẩm bổ sung.