Thiamin (Vitamin B1) Formerly named Aneurin | Thiamin (Vitamin B1)


 Thiamin (Vitamin B1)

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Formerly named Aneurin


First named Aneurin for the detrimental neurological effects if not present in the diet.

Nervous system support: Nerve transmission in peripheral nerves and the brain

Vitamin B1 can be found in almost all foods however B1 is removed in the processing and cooking of foods and can be deficient in the modern western “highly processed foods” diet.

All living organisms use thiamine, but it is synthesized only in bacteria, fungi and plants

Promotes energy production

Neurotransmitter metabolism (acetylcholine and serotonin)

Synthesis of collagen and other proteins


Increased Risk of Deficiency

Heavy alcohol consumption

Refined carbohydrates and processed foods diet

Older age groups

High coffee and black tea intake

Folate deficiency (impairs absorption of thiamin)

Strenuous exercise




Liver disease


Rapid growth: as in pregnancy, lactation and  adolescence

Oral contraceptive use

Signs and Symptoms of Deficiency

Impaired sensation and reflexes

Staggering gait, poor balance

Mental confusion, defects in learning and memory, frequent headache, insomnia

Personality changes (depression, irritability)

Korsakoffs syndrome

Optic neuropathy



Weight loss – Loss of appetite


Muscle tenderness (especially in the calf muscles) and weakness

Irregular heart- beat, shortness of breath


Impaired energy production

Poor wound healing

Diminished antibody response to infection


Good Dietary Sources

Brewer’s yeast, Pork chops, Ham, Oats,  Sunflower seeds, Flax, Brown rice, Whole grains, Asparagus, Kale, Eggs, Liver, Oranges, Potatoes, Legumes, Watermelon, Rye


There are no adverse effects recorded.

Medicinal Dosage

1.4mg daily. However doses of 50mg have been recorded as giving an increase in mental acuity

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Deborah Harper

Article by Debbie Harper

Debbie Harper is a self-published author and an accomplished blogger. She's the founder of and the author of the book “The Number #1 Rule for a Long and Healthy Life”. If you like this post, you can stay up to date with the latest information from by subscribing via RSS, or receive articles directly in your inbox. Then click here to download a free report on "The Number #1 Rule for a Long and Healthy Life".