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What is the composition of sweat?

Published in Human Physiology 2 mins read

Sweat is primarily composed of water, with small amounts of dissolved minerals, lactic acid, and urea.

While mostly water, sweat is a complex mixture that can vary in its composition depending on several factors, including:

  • Individual: Everyone's sweat composition is slightly different due to genetics and health conditions.
  • Environment: The temperature and humidity can influence the concentration of certain components in sweat.
  • Physical Activity: More intense exercise can lead to higher concentrations of electrolytes and other components in sweat.

Here's a breakdown of some key components of sweat:

  • Water: The main component of sweat, making up the majority of its volume.
  • Electrolytes: Sodium, potassium, chloride, and magnesium are important electrolytes found in sweat. Their concentrations can vary depending on factors like hydration levels and exercise intensity.
  • Lactic Acid: A byproduct of anaerobic metabolism that accumulates in muscles during intense exercise.
  • Urea: A waste product of protein metabolism that is excreted through sweat.
  • Other Components: Trace amounts of other substances like glucose, amino acids, and hormones can also be found in sweat.

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