Vitamin B1
Vitamin B1, also known as thiamine, is a water-soluble vitamin essential for energy metabolism, nerve function, and overall cell growth. It plays a crucial role in converting carbohydrates into energy and supports the proper function of the heart, muscles, and nervous system.
Vitamin B1 RDA (Recommended Dietary Allowance):
- Men: 1.2 mg/day
- Women: 1.1 mg/day
- Pregnant women: 1.4 mg/day
- Breastfeeding women: 1.4 mg/day
ODA (Optimal Daily Allowance):
- 1.5-3 mg/day (varies based on individual needs and health conditions)
Found in:
- Whole grains and fortified cereals
- Pork
- Legumes (beans, lentils, peas)
- Nuts and seeds (sunflower seeds, flaxseeds)
- Fish (trout, tuna)
- Eggs
- Dairy products
- Vegetables (asparagus, Brussels sprouts)
Helps with:
- Energy production by aiding in the breakdown of carbohydrates
- Supporting healthy nerve and muscle function
- Promoting proper heart function
- Assisting in the synthesis of neurotransmitters
- Supporting a healthy immune system
Insufficient doses:
- Symptoms of deficiency (beriberi and Wernicke-Korsakoff syndrome):
- Fatigue and weakness
- Nerve damage (tingling and numbness in extremities)
- Muscle loss and coordination issues
- Memory problems and confusion
- Cardiovascular issues, including an enlarged heart
Excessive doses:
- Thiamine is water-soluble, so excess amounts are typically excreted
- High doses are generally safe but may cause mild digestive discomfort
Types of Vitamin B1:
- Thiamine hydrochloride – Found in supplements and fortified foods
- Thiamine mononitrate – Another common supplemental form
- Benfotiamine – A fat-soluble form that may offer better absorption
Interactions (synergy and anti):
- Synergy:
- Antagonistic interactions:
- Alcohol impairs Vitamin B1 absorption and increases the risk of deficiency
- Excessive caffeine intake may deplete Vitamin B1 levels
- Some diuretics can increase Vitamin B1 excretion