Hydration Glossary
Learn the key terms behind hydration science. Each term is explained in plain language to help you make better decisions about your daily water intake.
Dehydration
Dehydration occurs when your body loses more fluid than it takes in, creating a deficit that disrupts normal bodily func...
Electrolytes
Electrolytes are minerals that carry an electrical charge when dissolved in body fluids, playing a critical role in hydr...
Hyponatremia
Hyponatremia is a potentially dangerous condition where blood sodium levels drop below 135 milliequivalents per liter, o...
Diuretic
A diuretic is any substance that promotes the production of urine, increasing the rate at which your body expels water a...
Osmolality
Osmolality is a measurement of the concentration of dissolved particles in a fluid, expressed as milliosmoles per kilogr...
Rehydration
Rehydration is the process of restoring lost fluids and electrolytes to the body after a period of dehydration. Effectiv...
Fluid Balance
Fluid balance refers to the equilibrium between water intake and water output in the human body. Your body maintains thi...
Edema
Edema is the medical term for swelling caused by excess fluid trapped in the body's tissues, most commonly noticed in th...
Kidney Function
Kidney function encompasses the vital roles your kidneys play in maintaining fluid balance, filtering waste from the blo...
Metabolic Water
Metabolic water is the water produced internally by your body as a byproduct of cellular metabolism, specifically the ox...
Thermoregulation
Thermoregulation is the process by which the body maintains its core temperature within a narrow optimal range of approx...
Water Intoxication
Water intoxication, also known as water poisoning or hyperhydration, is a life-threatening condition that occurs when a ...