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Fact check: Distilled water poisionous

Checked on June 11, 2025

1. Summary of the results

The claim that distilled water is poisonous is definitively false. Multiple sources confirm that distilled water is safe to drink [1] [2]. Distilled water is created through a purification process of boiling and condensing steam, which removes impurities [2]. While safe for consumption, it's important to note that distilled water lacks minerals typically found in tap water [1] [3].

2. Missing context/alternative viewpoints

Several important contextual points need to be considered:

  • While not poisonous, long-term exclusive consumption may lead to:
  • Mineral deficiencies
  • Increased body acidity [4]
  • Potential health risks if not part of a balanced diet [5]
  • Distilled water can actually have positive effects, such as helping to flush toxins from the body [2]
  • The water may have a flat taste compared to mineral-rich tap water [1]
  • Healthcare professionals should be consulted regarding long-term consumption [5]

3. Potential misinformation/bias in the original statement

The characterization of distilled water as "poisonous" represents a significant misunderstanding of the difference between:

  • Acute toxicity (being poisonous)
  • Potential long-term dietary inadequacy from lack of minerals

This type of misinformation might benefit:

  • Companies selling mineral supplements
  • Bottled water companies promoting "mineral-enhanced" products
  • Alternative health practitioners promoting specific water treatments

The scientific consensus, supported by multiple sources, indicates that distilled water is safe when consumed as part of a balanced diet [5] [3], though it should not be relied upon as one's exclusive water source due to its lack of essential minerals.

Want to dive deeper?
What are the health effects of drinking only distilled water long-term?
Does distilled water leach minerals from the body when consumed regularly?
Is distilled water safe for daily drinking compared to tap or filtered water?
What is the difference between distilled water and purified water for health?
Can drinking distilled water cause electrolyte imbalances in the human body?