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Writer's pictureJose Montanez
Mar 22, 20225 min read

How to Improve your Health with Powerful Vitamin A


Photo by Engin Akyurt


How often are you getting As? Vitamin A that is.

Vitamin A is a group of fat-soluble compounds important for human health. Vitamin A is essential for:

  • Healthy vision

  • Lowering the risk of certain cancers

  • Healthy immune system

  • Reducing the risk of acne

  • Bone health

  • Growth and reproduction

  • Testosterone and prostate health

Vitamin A preserves your eyesight. Studies suggest adequate amounts of vitamin A prevents the development of night blindness. It also helps slow the age-related decline of your eyesight.

Vitamin A may lower the risk of certain cancers. Cancer occurs when abnormal cells begin to grow or divide in an uncontrolled way. Vitamin A plays an important role in the growth and development of your cells. Consuming an adequate amount of vitamin A reduces the risk of certain cancers. This includes Hodgkin's lymphoma, cervical, lung, and bladder cancer.


Vitamin A supports a healthy immune system. It maintains the mucus barriers in your eyes, lungs, gut, and genitals. These barriers trap bacteria and other infectious agents. Vitamin A also supports the production and function of white blood cells. These capture and clear bacteria and other pathogens from the bloodstream.

Vitamin A reduces the risk of some skin conditions. Doctors prescribe topical and oral retinoids to treat acne and wrinkles. Though, the role of vitamin A is still unclear for skin conditions.

Vitamin A supports bone health. Vitamin A is necessary for proper bone growth and development. Studies suggests that people with low levels of vitamin A are at a higher risk of fractures.

Vitamin A promotes healthy growth and reproduction. Studies suggests that males and females with low levels of vitamin A:

  • Lack sperm cell development, causing infertility in men

  • Reduce egg quality and egg implantation in the womb of a woman

Vitamin A plays a role in the growth and development of an unborn child. Organs and structures, such as the skeleton, nervous system, heart, kidneys, and more. Furthermore, vitamin A supplementation, along with iron, proved as efficient as hormonal therapy on boys with delayed puberty.


Vitamin A regulates androgen activity. This is likely because of enzyme Bco1. The latter converts dietary carotenoids into vitamin A in the body. Bco1 also regulates testosterone levels and growth of the prostate. Thus, consuming an adequate amount of vitamin A encourages our body to produce more Bco1. In turn, you support testosterone levels and prostate health.

 

Here are some animal sources high in vitamin A:

  • Beef liver

  • Lamb liver

  • Cod liver oil

  • Salmon

  • Eggs

Here are some plant sources high in vitamin A:

  • Sweet potatoes

  • Winter squash

  • Kale

  • Carrots

  • Sweet red peppers

Here are the recommended dietary allowance. This includes the amount of vitamin A you get from foods and supplements.



 

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References:

  1. Office of Dietary Supplements; Vitamin A; U.S. National Institutes of Health; https://ods.od.nih.gov/factsheets/VitaminA-HealthProfessional/#h13; Last updated 26 March 2021; Last accessed 14 March 2022.

  2. Helen West; 6 Health Benefits of Vitamin A, Backed by Science; Healthline; https://www.healthline.com/nutrition/vitamin-a-benefits; Published 23 August 2018; Last accessed 14 March 2022.

  3. Morgan Griffin; Vitamin A (Retinoid); WebMD; https://www.webmd.com/a-to-z-guides/supplement-guide-vitamin-a; Published 22 March 2021; Last accessed 14 March 2022.

  4. School of Public Health; Vitamin A; Harvard; https://www.hsph.harvard.edu/nutritionsource/vitamin-a/; Last accessed 14 March 2022.

  5. Emmanuelle Reboul; Absorption of Vitamin A and Carotenoids by the Enterocyte: Focus on Transport Proteins; U.S. National Library of Medicine; Nutrients, 5(9), 3563–3581; https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3798921/; Published 12 September 2013; Last accessed 14 March 2022.

  6. Alfred Sommer; Vitamin A Deficiency and Clinical Disease: A Historical Overview; The Journal of Nutrition, Volume 138, Issue 10, Pages 1835-1839; https://academic.oup.com/jn/article/138/10/1835/4669996; Published 1 October 2008; Last accessed 14 March 2022.

  7. Wu, Juan and Eunyoung Cho, Walter Willet, Srinivas Sastry, and Debra Schaumberg; Intakes of Lutein, Zeaxanthin, and Other Carotenoids and Age-Related Macular Degeneration During 2 Decades of Prospective Follow-Up; U.S National Library of Medicine; JAMA Ophthalmol 133(12):1415-24; https://pubmed.ncbi.nlm.nih.gov/26447482/; Published December 2015; Last accessed 14 March 2022.

  8. Sankaranarayanan, R, and B. Mathew; Retinoids as Cancer-Preventive Agents; IARC Scientific Publications, 139: 47-59; U.S. National Library of Medicine; https://pubmed.ncbi.nlm.nih.gov/8923019/; Published 1996; Last accessed 15 March 2022.

  9. Sun, Shin-Yong and Reuben Lotan; Retinoids and their Receptors in Cancer Development and Chemoprevention; Critical Reviews in Oncology/Hematology, 41(1), 41-55; U.S. National Library of Medicine; https://pubmed.ncbi.nlm.nih.gov/11796231/; Published January 2002; Last accessed 15 March 2022.

  10. Chen, Feifei and Jiyi Hu, Ping Liu, Jing Li, Zheng Wei, and Peng Liu; Carotenoid Intake and Risk of non-Hodgkin Lymphoma: A Systematic Review and Dose-Response Meta-Analysis of Observational Studies; Annal of Hematology, 96(6), 957-965; U.S. National Library of Medicine; https://pubmed.ncbi.nlm.nih.gov/28011986/; Published June 2017; Last accessed 15 March 2022.

  11. Zhang, Xingliang and Bingqin Dai, Bingzhen Zhang, and Zhiping Wang; Vitamin A and Risk of Cervical Cancer: A Meta-Analysis; Gynecology Oncology, 124(2), 366-373; U.S. National Library of Medicine; https://pubmed.ncbi.nlm.nih.gov/22005522/; Published February 2012; Last accessed 15 March 2022.

  12. Yu, Na and Xinming Su, Zanfeng Wang, Bing Dai, and Gian Kang; Association of Dietary Vitamin A and β-Carotene Intake with the Risk of Lung Cancer: A Meta-Analysis of 19 Publications; Nutrients, 7(11), 9309-9324; U.S. National Library of Medicine; https://pubmed.ncbi.nlm.nih.gov/26569298/; Published 11 November 2015; Last accessed 15 March 2022.

  13. Tang, Jian-er and Rong-Jiang Wang, Huan Zhong, Bing Yu, and Yu Chen; Vitamin A and Risk of Bladder Cancer: A Meta-Analysis of Epidemiological Studies; World Journal of Surgical Oncology, 12, 130; U.S. National Library of Medicine; https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4030017/; Published 29 April 2014; Last accessed 15 March 2022.

  14. Linnewiel-Hermoni, Karin and Marina Khanin, Michael Danilenko, Gabriel Zango, Yaara Amosi, Joseph Levy, and Yoav Sharoni; The Anti-Cancer Effects o Carotenoids and Other Phytonutrients Resides in their Combined Activity; Archives of Biochemistry and Biophysics, 572, 28-35; U.S. National Library of Medicine; https://pubmed.ncbi.nlm.nih.gov/25711533/; Published 15 April 2015; Last accessed 15 March 2022.

  15. Mayne, S.T. and S. Graham and T.Z. Zheng; Dietary Retinol: Prevention or Promotion of Carcinogenesis in Humans?; Cancers Causes and Control: CCC, 2(6), 443-450; U.S. National Library of Medicine; https://pubmed.ncbi.nlm.nih.gov/1764569/; Published November 1991; Last accessed 15 March 2022.

  16. Doldo, Elena and Gaetano Costanza, Sara Agostinelli, Chiara Tarquini, Amedeo Ferlosio, Gaetano Arcuri, Daniela Passeri, Maria Giovanna Scioli, and Augusto Orlandi; Vitamin A, Cancer Treatment and Prevention: The New Role of Cellular Retinol Binding Proteins; BioMed research International, 2015: 624627; U.S. National Library of Medicine; https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4387950/; Published 2015; Last accessed 15 March 2022.

  17. Kucharska, Alicja and Agnieszka Szmurło and Beata Sińska; Significance of Diet in Treated and Untreated Acne Vulgaris; Postepy dermatologii i alergologii, 33(2), 81–86; U.S. National Library of Medicine; https://pubmed.ncbi.nlm.nih.gov/27279815/; Published April 2016; Last accessed 15 March 2022.

  18. Merita Grajqevci Kotori; Low-Dose Vitamin A Tablets-Teatment of Acne Vulgaris; Medical Archives (Sarajevo, Bosnia and Herzegovina), 69(1), 28-30; U.S. National Library of Medicine; https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4384860/; Published February 2015; Last accessed 15 March 2022.

  19. Zhang, X., Zhang, R., Moore, J. B., Wang, Y., Yan, H., Wu, Y., Tan, A., Fu, J., Shen, Z., Qin, G., Li, R., & Chen, G.; The Effect of Vitamin A on Fracture Risk: A Meta-Analysis of Cohort Studies; International journal of environmental research and public health, 14(9), 1043; U.S. National Library of Medicine; https://pubmed.ncbi.nlm.nih.gov/28891953/; Published 10 September 2017; Last accessed 15 March 2022.

  20. Clagett-Dame, M., & Knutson, D.; Vitamin A in Reproduction and Development; Nutrients, 3(4), 385–428; U.S. National Library of Medicine; https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3257687/; Published April 2011; Last accessed 15 March 2022.

  21. Busada, J. T., & Geyer, C. B.; The Role of Retinoic Acid (RA) in Spermatogonial Differentiation; Biology of reproduction, 94(1), 10; U.S. National Library of Medicine; https://pubmed.ncbi.nlm.nih.gov/26559678/; Published January 2016; Last accessed 15 March 2022.

  22. Clagett-Dame, M., & Knutson, D.; Vitamin A in Reproduction and Development; Nutrients, 3(4), 385–428; U.S. National Library of Medicine; https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3257687/; Published April 2011; Last accessed 15 March 2022.

  23. Zadik, Z., Sinai, T., Zung, A., & Reifen, R.; Vitamin A and Iron Supplementation is as Efficient as Hormonal Therapy in Constitutionally Delayed Children; Clinical Endocrinology, 60(6), 682-687; U.S. National Library of Medicine; https://pubmed.ncbi.nlm.nih.gov/15163330/; Published June 2004; Last accessed 15 March 2022.

  24. Schooling, C.M. and H.E. Jones; Does Vitamin A Increase Androgens?; International Journal of Epidemiology, Volume 4, Issue Supplement_1; Oxford Academic; https://academic.oup.com/ije/article/44/suppl_1/i257/2573502; Published 23 September 2015; Last accessed 15 March 2022.

  25. Andy Peloquin; Vitamin A is More than Just Easy on the Eyes; Breaking Muscle; https://breakingmuscle.com/healthy-eating/vitamin-a-is-more-than-just-easy-on-the-eyes/; Last updated 2 March 2017; Last accessed 15 March 2022.

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