What are diuretic substances?

Explanation

**Step-by-Step Solution:**

1. **Definition of Diuretic Substances**: Diuretic substances are compounds that promote the increased production of urine by the kidneys.

2. **Mechanism of Action**: These substances work by decreasing the reabsorption of water in the kidneys. Normally, the hormone ADH (antidiuretic hormone) facilitates the reabsorption of water back into the bloodstream. Diuretics inhibit the action of ADH, leading to less water being reabsorbed.

3. **Effect on Urine Output**: As a result of the decreased reabsorption of water, the volume of urine produced increases significantly. This means that more water and salts are expelled from the body.

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