Flere studier om dehydrering

Effects of hydration status on cognitive performance and mood. – (2014)

«Current findings in the field suggest that particular cognitive abilities and mood states are positively influenced by water consumption. The impact of dehydration on cognition and mood is particularly relevant for those with poor fluid regulation, such as the elderly and children.» http://www.ncbi.nlm.nih.gov/pubmed/24480458

Influence of progressive fluid restriction on mood and physiological markers of dehydration in women. – (2013)

«The significant effects of FD on mood included decreased alertness and increased sleepiness, fatigue and confusion. The most consistent effects of mild dehydration on mood are on sleep/wake parameters.» http://www.ncbi.nlm.nih.gov/pubmed/22716932

Water consumption, not expectancies about water consumption, affects cognitive performance in adults. – (2013)

«This suggests that water consumption effects on letter cancellation are due to the physiological effects of water, rather than expectancies about the effects of drinking water.» http://www.ncbi.nlm.nih.gov/pubmed/23104227

Effects of drinking supplementary water at school on cognitive performance in children. – (2012)

«…our results showed that a remarkable proportion of children were in a state of mild, voluntary dehydration at the beginning of the school day (84%). We found a significant negative correlation between dehydration and the auditory number span, which indicates a beneficial effect of drinking supplementary water at school on short-term memory. Moreover, there was a positive correlation between dehydration andperformance in the verbal analogy task.» http://www.ncbi.nlm.nih.gov/pubmed/22841529

Mild dehydration affects mood in healthy young women. – (2012)

«In conclusion, degraded mood, increased perception of task difficulty, lower concentration, and headache symptoms resulted from 1.36% dehydration in females. Increased emphasis on optimal hydration is warranted, especially during and after moderate exercise.» http://www.ncbi.nlm.nih.gov/pubmed/22190027

Hydration, morbidity, and mortality in vulnerable populations. – (2012)

«Epidemiological studies have shown an association, although not necessarily a causal one, between a low habitual fluid intake and some chronic diseases, including urolithiasis, constipation, asthma, cardiovascular disease, diabetic hyperglycemia, and some cancers.» http://www.ncbi.nlm.nih.gov/pubmed/23121352

Challenges of linking chronic dehydration and fluid consumption to health outcomes. – (2012)

Og denne som nevner det meste rundt utfordringer med å måle vannintak, noe av årsaken til at det er vanskelig å finne objektive medisinske parametere på det: http://www.ncbi.nlm.nih.gov/pubmed/23121346

Mild dehydration impairs cognitive performance and mood of men. – (2011)

«In conclusion, mild dehydration without hyperthermia in men induced adverse changes in vigilance and working memory, and increased tension/anxiety and fatigue.» http://www.ncbi.nlm.nih.gov/pubmed/21736786

Water, Hydration and Health – (2011)

Review som nevner det meste.

«As with physical functioning, mild to moderate levels of dehydration can impair performance on tasks such as short-term memory, perceptual discrimination, arithmetic ability, visuomotor tracking, and psychomotor skills.5356» http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2908954/

Hydration and disease. – (2007)

«Avoidance of a high fluid intake as a precautionary measure may be indicated in patients with cardiovascular disorders, pronounced chronic renal failure (III), hypoalbuminemia, endocrinopathies, or in tumor patients with cisplatin therapy (IIb) and menace of water intoxication. Acute systemic mild hypohydration or dehydration may be a pathogenic factor in oligohydramnios (IIa), prolonged labor (IIa), cystic fibrosis (III), hypertonic dehydration (III), and renal toxicity of xenobiotica (Ib). Maintaining good hydration status has been shown to positively affect urolithiasis (Ib) and may be beneficial in treating urinary tract infection (IIb), constipation (III), hypertension (III), venous thromboembolism (III), fatal coronary heart disease (III), stroke (III), dental disease (IV), hyperosmolar hyperglycemic diabetic ketoacidosis (IIb), gallstone disease (III), mitral valve prolapse (IIb), and glaucoma (III). Local mild hypohydration or dehydration may play a critical role in the pathogenesis of several broncho-pulmonary disorders like exercise asthma (IIb) or cystic fibrosis (Ib).» http://www.ncbi.nlm.nih.gov/pubmed/17921462

Human water needs. – (2005)

«A daily water intake of 3.7 L for adult men and 2.7 L for adult women meets the needs of the vast majority of persons. However, strenuous physical exercise and heat stress can greatly increase daily water needs, and the individual variability between athletes can be substantial.» http://www.ncbi.nlm.nih.gov/pubmed/16028570

“Drink at least eight glasses of water a day.” Really? Is there scientific evidence for “8 × 8”? – (2002)

En studie med et klart utgangspunkt i å argumentere mot alle råd om å drikke vann for normale friske mennesker. Sannsynligvis har denne ikke fått med seg noen av studiene jeg har linket til over.

«However, a breakdown of the beverages shows that nearly one-half (47%) of the total drinking fluid was coffee (396 ml), tea (152 ml), soft drinks (179 ml), and alcohol (70 ml),»

«Equally to be emphasized, lest the message of this review be misconstrued, is the fact (based on published evidence) that large intakes of fluid, equal to and greater than 8 x 8, are advisable for the treatment or prevention of some diseases and certainly are called for under special circumstances, such as vigorous work and exercise, especially in hot climates.»

«In summary, this article is concerned with fluid intake forhealthy adults in atemperate climate, performing, at most, mild exercise. Excluded were any special circumstances, such as illnesses, hot climates, and strenuous work or exercise.» http://ajpregu.physiology.org/content/283/5/R993.long

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