Biotin, also known as vitamin B7 or vitamin H, plays a crucial role in the nervous system. It is a water-soluble vitamin that is important for the conversion of carbohydrates, fats and proteins into energy. Biotin also helps maintain the health of nerve cells and promotes communication between nerve cells. Research has shown that a lack of biotin can lead to neurological problems, such as fatigue, muscle weakness, depression and memory problems. Biotin also plays an important role in the regulation of certain neurotransmitters, which are responsible for signal transmission between nerve cells. In addition, biotin can support the health of the myelin sheaths that surround and protect the nerve cells. A lack of biotin can therefore lead to a disruption of the myelin sheaths and impair nerve conduction. It is important to consume a sufficient amount of biotin through the diet to ensure optimal functioning of the nervous system. Foods such as eggs, nuts, seeds, oatmeal and spinach are rich in biotin and should be consumed regularly.