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[Water--for life].

Per Ole Iversen1, Gunnar Nicolaysen

  • 1Institutt for ernaengsforskning, Universitetet i Oslo, 0316 Oslo. p.o.iversen@basalmed.uio.no

Tidsskrift for Den Norske Laegeforening : Tidsskrift for Praktisk Medicin, Ny Raekke
|January 10, 2004
PubMed
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While water is essential, current scientific evidence does not firmly support increased water consumption for health benefits. Both dehydration and excessive hydration pose health risks, particularly for the elderly.

Area of Science:

  • Physiology
  • Nutritional Science

Context:

  • Water is a vital nutrient with unique physicochemical properties.
  • Current trends show increased water consumption, but the scientific basis is not well-established.
  • Regulation of water balance is crucial for overall health.

Purpose:

  • To review the scientific literature on water intake and excretion regulation in adults.
  • To examine the evidence supporting increased water consumption for health benefits.
  • To highlight the risks associated with both dehydration and excessive hydration.

Summary:

  • Water excretion is primarily controlled by urine production, with anti-diuretic hormone playing a key role.
  • Water intake is mainly regulated by thirst, a sensation not fully understood.

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  • Limited evidence suggests potential benefits of increased water intake for preventing certain cancers and cardiovascular diseases.

    • Impact:

    • Excessive hydration and dehydration can lead to severe health issues, especially in the elderly.
    • There is a need for more robust scientific research to validate health claims associated with higher water intake.
    • Understanding water balance regulation is critical for public health recommendations.