Doubling of water intake increases daytime blood pressure and reduces vertigo in healthy subjects

Clin Exp Hypertens. 2010;32(7):439-43. doi: 10.3109/10641961003686450. Epub 2010 Sep 23.

Abstract

We studied the effect of increased water intake on ambulatory blood pressure (BP) in healthy individuals. Blood pressure was recorded after 2 weeks of either regular (RWI) or extra water intake (EWI, an additional 30 ml water/kg body weight per day) in 20 healthy subjects (10 males, 10 females). The extra water intake (RWI: 1.7 ± 0.59 l, EWI: 3.7 ± 0.84 l, respectively, p < 0.0001, i.e., an increase of 2 liters) induced an increase in mean arterial daytime BP from 89.0 ± 5.5 mmHg during RWI to 91.4 ± 6.4 mmHg during the EWI phase (p = 0.005), while night-time BP was unchanged by the intervention. The visual-analogue-scale (VAS, maximum score of 10) score corresponding to the statement "I often experience vertigo" was 3.1 ± 2.6 during RWI and decreased to 2.1 ± 2. 1 during EWI phase (p = 0.008). In conclusion,two liters of extra water intake for 2 weeks significantly increased daytime blood pressure and reduced a sense of vertigo in healthy individuals.

Publication types

  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Blood Pressure Monitoring, Ambulatory
  • Blood Pressure* / physiology
  • Case-Control Studies
  • Drinking* / physiology
  • Female
  • Humans
  • Male
  • Periodicity
  • Research Design
  • Treatment Outcome
  • Vertigo* / metabolism
  • Vertigo* / physiopathology
  • Vertigo* / prevention & control
  • Young Adult