Vitamin B1, also known as thiamine, is an essential water-soluble vitamin that plays a crucial role in energy metabolism and nerve function. Here are some dietary sources of vitamin B1:

1. Whole Grains: Whole grains are excellent sources of vitamin B1. Foods like whole wheat, brown rice, oats, and whole grain bread provide substantial amounts of thiamine.
2. Legumes: Legumes, including beans, lentils, and peas, are rich sources of thiamine. They are a nutritious addition to your diet and provide a good amount of vitamin B1.
3. Pork: Pork, particularly lean cuts like pork chops and tenderloin, is one of the best animal sources of thiamine. Other meats, such as beef and poultry, also contain smaller amounts of this vitamin.
4. Nuts and Seeds: Some nuts and seeds contain thiamine. Sunflower seeds, macadamia nuts, and pistachios are examples of good sources.
5. Enriched and Fortified Foods: Certain processed foods, such as breakfast cereals, are fortified with vitamins, including thiamine. Check the nutrition labels to see if a product is fortified with vitamin B1.
6. Nutritional Yeast: Nutritional yeast is often used as a seasoning or condiment in vegan and vegetarian dishes. It is a good source of thiamine and has a cheese-like flavor.
7. Fish: Some fish, like trout, salmon, and mackerel, contain moderate amounts of thiamine. It’s more common in fish compared to other animal products.
8. Fruits and Vegetables: While fruits and vegetables are not typically high in thiamine, some do contain small amounts. For example, spinach and acorn squash have modest levels of thiamine.

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A well-balanced diet that includes a variety of these foods can help you meet your daily thiamine requirements. Vitamin B1 is essential for the proper functioning of the nervous system and for converting carbohydrates into energy, making it an important part of your overall nutrition.