Hyponatremia is associated with an increased risk of death. The economic costs of hyponatremia are estimated at $2.6 billion in the United States. Signs and symptoms of hyponatremia include nausea and vomiting, headache, short-term memory loss, confusion, lethargy, fatigue, loss of appetite, irritability, muscle weakness, spasms or cramps, seizures, and decreased consciousness or coma. The presence and severity of signs and symptoms are related to the level of salt in the blood, with lower levels of plasma sodium associated with more severe symptoms. However, emerging data suggest that mild hyponatremia (plasma sodium levels at 131–135 mmol/L) is associated with numerous complications
Human Element believes it is the fear that the walking dead instill in the survivors, who lead them to do unreasonable things to survive. The game focuses on the survivors more so than the zombies, "the human element", and takes place 35 years after the zombie apocalypse began. It can be played across multiple devices; an example given is that one player could play the console version for hundreds of hours, just for the action, whereas an intelligent class player, playing on a tablet, can join into the previous player's alliance and scavenge for them, and then benefit from the buffs given