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Amyotrophic Lateral Sclerosis (ALS) also known as Lou Gehrig's disease is the most common form of motor neuron disease in the maturity (Batos et al,. 2011). Motor neurons are cells that carry messages from the brain to the muscles so they can contract. During ALS that these motor neurons slowly degenerate and die (Ingram, 2012). The symptoms progress from muscles weakness, clumsiness and cramping (Ingram, 2012). It may then begin from the limbs, slowly eroding the capability to maneuver, ending in paralysis or it may start affecting speech, swallowing and breathing (Ingram, 2012). Patients with ALS generally die of respiratory failures in five decades of being diagnosed (Ingram, 2012). Most ALS cases are sporadic and they are not sure what brings them on, but around 5 percent of ALS patients have signs of it within their family (Batos et al., 2011). Although they aren't clear of the cause of ALS, a team using Neurology International has made any theory to the potential cause. The first possible cause that they think may cause ALS is heavy metal intoxication. The Neurology International group described a patient who had worked in a mill and was subjected to large amounts of lead. The analysis concluded that, though no other tests were conducted, that the likely cause of the ALS was the exposure to lead (Batos et al., 2011). Mercury could also be a cause of the growth of ALS. Researchers believe this as a nurse created ALS after she broke a thermometer containing mercury (Batos et al., 2011). Viral issues were pointed out to also be a possibly cause of ALS. Studies demonstrated a potential association between persistent disease due to enterovirus and ALS development in 46 people (Batos et al.. .