What Is the Chemical Composition of Human Sweat or Perspiration?

Question: What Is the Chemical Composition of Human Sweat or Perspiration?

As you might imagine, human perspiration is mainly water. Have you ever wondered what else is in sweat? Here's a look at the chemical composition of perspiration and the factors that affect it.

Answer:

Why Do We Sweat?

The main reason people perspire is so evaporation of water can cool the body. Therefore, it makes sense that the main component of perspiration is water. However, perspiration also plays a role in excretion of toxins and waste products. Sweat is chemically similar to the plasma, but certain components are selectively retained or excreted.
Variations in Perspiration Chemical Composition

The chemical composition of perspiration varies between individuals and also depends on what they have been eating and drinking, why they are sweating, how long they have been perspiring and several other factors.
General Composition

Perspiration consists of water, minerals, lactate and urea. On average, the mineral composition is:

• sodium (0.9 gram/liter)
• potassium (0.2 g/l)
• calcium (0.015 g/l)
• magnesium (0.0013 g/l)

Trace metals that the body excretes in sweat include:

• zinc (0.4 milligrams/liter)
• copper (0.3–0.8 mg/l)
• iron (1 mg/l)
• chromium (0.1 mg/l)
• nickel (0.05 mg/l)
• lead (0.05 mg/l)

FONTE: International Journal of Sport Nutrition and Exercise Metabolism

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Salve ha scritto:

Quindi nelle stagioni calde o dopo un'intesa sudata il sodio è così importante? una carenza di sodio cosa potrebbe comportare?

Clicca per allargare...

Il sodio è molto importante, ma lo recuperi facilmente da tantissimi cibi al contrario di magnesio e potassio che sono un pochino più complicati da recuperare nelle dosi necessarie