Table 5.

Normal water balance

Sourceml
Water input
 Ingested water1500
 Food800
 Metabolica300
 Total2600
Water output
 Urine1500
 Sweat100
 Stool200
 Insensible lossesb (TEWLc and respiratory)800
 Total2600
  • TEWL, transepidermal water loss.

  • a Water generated in the body by the complete oxidation of carbohydrates, fats, and proteins.

  • b Water lost from the body that can be neither perceived nor measured directly.

  • c TEWL is the normal, constitutive loss of water vapor from the skin in the absence of sweat gland activity.