Insufficient vitamin d during adulthood is associated with what?

Known as the sunshine vitamin, vitamin D is produced by the body in response to skin being exposed to sunlight. ... Traditionally, vitamin D deficiency has been associated with rickets, a disease in which the bone tissue doesn't properly mineralize, leading to soft bones and skeletal deformities.

Lack of vitamin d is also associated with genetics.

fluid balance is an aspect of the homeostasis of organisms in which the amount of water in the organism needs to be controlled, via osmoregulation and behavior, such that the concentrations of electrolytes (salts in solution) in the various body fluids are kept within healthy ranges. the core principle of fluid balance is that the amount of water lost from the body must equal the amount of water taken in.