Axons are usually surrounded by a fatty substance called myelin. Myelin allows action potentials to propagate quickly from one neuron to another, allowing for rapid signal transmission. It is a critical part of the nervous system and it's absence has devastating effects, as seen in conditions such as multiple sclerosis.
Researchers have found that patients with low levels of folate in their blood are more likely to develop hearing loss (Gok 2004; Lasisi 2010; Gopinath 2010), and that low vitamin B12 levels are associated with hearing loss (Gok 2004) and tinnitus (Shemesh 1993).
Some fat-soluble vitamins are vitamins A, D, E, and K. (1) Vitamins included in this category include vitamin A, vitamin D, vitamin E, as well as vitamin K. An acronym to help remember these fat-soluble vitamins-ADEK. vitamins help convert food often consumed as carbohydrates into fuel. They also help the nervous system function properly. Good sources of Vitamin B are bananas, potatoes, whole grans, and chili peppers. Vitamin C: helps regulate the immune system and relieve pain caused by tired muscles.