Vitamin B1, also known as thiamine, is an essential nutrient that helps our bodies convert food into energy. It plays a crucial role in the functioning of our nervous system and is important for maintaining a healthy metabolism. Foods rich in vitamin B1 include whole grains, nuts, and legumes, making it easy to include in a balanced diet. A deficiency in vitamin B1 can lead to health issues, such as beriberi, which affects the cardiovascular and nervous systems. It's important to ensure we get enough thiamine through our diet or supplements, especially for those with increased needs, like pregnant women or athletes.