Advert on the BMJ website for “Hydration for Health“. It’s well worth noting that the sponsors are Danone Water.
Water is a good drink, yes yes, but tapwater in a refilled bottle is far better than expensive bottled water. Also kidneys are excellent at ensuring that your fluid balance is perfect. Your body is pretty good at telling you when to drink.
Hydration for Health would have you believe that
“many people still may not drink enough fluids” and they cite two studies. The first is a review of water and it’s trace elements, and not a clinical review article or research study. The second is a nursing study of old people attending an emergency department in the US, and I can access only the abstract, and I suspect that what is classed as dehydration may be either diuretic effects or effects of illness.
The last time this ‘drink more water’ thing was rampant I was faced with the moral dilemma of whether to fill up bottles of water for the children to sip at constantly at school as instructed, or not. That one was easy.