Sweating removes water, salts, and urea from the body. Urea is a nitrogenous waste product resulting from cellular processes. While sweating is primarily a thermoregulatory mechanism, it also plays a minor role in excreting some toxins. Research indicates that heavy metals like nickel (Ni), lead (Pb), copper (Cu), arsenic (As), and mercury (Hg) can also be eliminated through sweat, though the extent is debated and may be influenced by factors like the intensity of exercise.
What is Sweat Composed Of?
Sweat is predominantly water (99%), but it also contains:
- Electrolytes: Including sodium chloride (salt).
- Urea: A nitrogenous waste product.
- Trace amounts of other substances: This includes toxins such as heavy metals, but the quantities are generally small compared to the removal via other excretory systems such as the kidneys and liver.
Sweating and Detoxification
The idea that sweating significantly detoxifies the body is a misconception. While some toxins are removed through sweat, the primary route of detoxification is via the liver and kidneys. Saunas and hot yoga, while promoting sweating, don't offer substantial detoxification benefits beyond the minor elimination of some substances.
Surgical Sweat Gland Removal
In cases of hyperhidrosis (excessive sweating), surgical removal of sweat glands, specifically those in the underarms, is sometimes performed. This procedure targets the glands responsible for excessive sweating in a specific area, not the overall process of sweating. This surgical intervention targets only a specific type of sweat gland and only in specific areas, it doesn't change the process of sweating elsewhere in the body.
