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Thiamin (thiamine), often known as vitamin B1, is a water-soluble vitamin that can be found naturally in some foods, as well as added to them and sold as a supplement. Thiamin is required for the growth and operation of many different cells.

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The best sources are:

-  Yeasts

-   Liver

-   Pork meat

-   Vegetables

-   Whole-grain products

-   Nuts

Thiamin can be found in multivitamins, B-complex vitamins, or sold separately in nutritional supplements. It is available in a variety of forms, including tablets, soft gels, and lozenges, as well as chewable and liquid drops, and may be labeled as thiamine hydrochloride or thiamine mononitrate.

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RDA: The Recommended Dietary Allowance (RDA) for men ages 19 and older is 1.2 mg daily, and for women in the same age range 1.1 mg daily. For pregnancy and lactation, the amount increases to 1.4 mg daily.

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Deficiency can lead to various problems in the brain and heart that require a constant supply of energy.

Congestive heart failure

A thiamin deficit can cause irregular motor functioning in the heart. Congestive heart failure is a disorder in which the heart is unable to efficiently pump blood throughout the body. Thiamine insufficiency affects 21 percent to 98 percent of persons with congestive heart failure.

Cognitive function

Thiamin insufficiency has been linked to neurological issues such as cognitive deterioration in studies. The Wernicke-Korsakoff syndrome is a type of thiamin deficiency that causes mental alterations comparable to Alzheimer's disease.

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Thiamin’s Role in the Brain and Nervous Tissue 

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Thiamin’s Role in the Brain and Nervous Tissue 

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Thiamin is required for a variety of enzymatic functions in the brain, including development, function, maintenance, and interneural communication. Its function in these situations is to produce acetylcholine.

Thiamin in the Immune System

Thiamin is required for a variety of enzymatic functions in the brain, including development, function, maintenance, and interneural communication. Its function in these situations is to produce acetylcholine.

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Manzetti†, S., Zhang†, J., & van der Spoel, D. (2014, January 14). Pubs.acs.org. Thiamin Function, Metabolism, Uptake, and Transport. Retrieved April 27, 2022, from https://pubs.acs.org/doi/full/10.1021/bi401618y

T.H. Chan , H. (2019, October 28). Thiamin – vitamin B1. The Nutrition Source. Retrieved April 27, 2022, from https://www.hsph.harvard.edu/nutritionsource/vitamin-b1/#:~:text=Thiamin%20(thiamine)%2C%20or%20vitamin,thiamin%2Drich%20foods%20is%20needed.

U.S. Department of Health and Human Services. (2021, March 26). Office of dietary supplements - thiamin. NIH Office of Dietary Supplements. Retrieved April 27, 2022, from https://ods.od.nih.gov/factsheets/Thiamin-HealthProfessional/

Laberge, M. (2021, December 14). Https://go.gale.com/ps/i.do?p=CIC&u=ko_acd_cec&id=GALE: A451148622&V... Course Hero. Retrieved April 27, 2022, from https://www.coursehero.com/tutors-problems/Genetics/36573760-httpsgogalecompsidopCICampukoacdcecampidGALEA451/