Names: Vitamin B1, thiamine
Best known for: Converting carbohydrates into energy; maintaining the normal function of the nervous system.
Good sources: Most abundant in meat. Other good sources are whole grains, fish and potatoes.
Recommended dietary allowance (RDA): 1.1 mcg/day. No maximum intake levels have been established.
Good to know: Vitamin B1 can help you withstand stress and prevent depression.
Vitamin B1 (thiamine) in Jake:Jake Light and Original: 33% of RDAJake Sports: 25% of RDAVitaminbars: 25% of RDA
A healthy adult man needs 1.1 mcg of vitamin B1 daily. The recommended intake for women is 0.89 mcg per day. These amounts reflect the recommended dietary allowance (RDA) according to the European Food Safety Authority (EFSA). Getting the recommended amounts of vitamin B1 can be as simple as having some oven-baked trout with a side of boiled potatoes for dinner.
When you cook food containing vitamin B1, a lot of it gets lost due to heating, or simply dissolves in the cooking water. To make the most of vitamin B1 in your food, try to steam or microwave it. And if you really must boil, keep the cooking water and make some stock!
Whole grains are a better source of vitamin B1 than refined grains. The part of the grain that contains vitamin B1 is its outer layer or “peel”. During grain refinement, this layer is removed. As a result, products like white bread and white rice don’t contain vitamin B1 at all.
An insufficient intake of vitamin B1 can have serious consequences for your health. In its early stages, a vitamin B1 deficiency causes weight loss, short-term memory loss, muscle weakness and cardiovascular symptoms, such as an enlarged heart.
In its most severe form, vitamin B1 deficiency can cause beriberi, a potentially fatal disease characterized by peripheral nerve damage and paralysis. Fortunately, nowadays beriberi is rarely observed in developed countries.
Some groups remain at high risk of vitamin B1 deficiency:
If you have a varied diet and don’t belong to the groups at high risk of vitamin B1 deficiency, it’s unlikely that you’ll suffer from its most severe consequences.
Under normal circumstances, there are no negative health effects associated with overconsumption of vitamin B1. Consequently, a maximum intake level has not been establishedA maximum intake level, referred to as a tolerable upper intake limit (UL), is the intake level at which side effects are very unlikely. for vitamin B1.
In case you take much more vitamin B1 than you need, the excess amount will leave your body through the kidneys. The absorption rate of vitamin B1 will also go down.
Your top three things to remember about vitamin B1 are: