Which drink is best for hydration? Hint: It isn't water [View all]

Which drink is best for hydration? Hint: It isn't water

The other factor affecting how well a beverage hydrates relates to a drink's nutrient composition. For example, milk was found to be even more hydrating than plain water because it contains the sugar lactose, some protein and some fat, all of which help to slow the emptying of fluid from the stomach and keep hydration happening over a longer period of time.
Milk also has sodium, which acts like a sponge and holds onto water in the body and results in less urine produced.



The same can be said for oral rehydration solutions that are used to treat diarrhea. Those contain small amounts of sugar, as well as sodium and potassium, which can also help promote water retention in the body.
The most hydrating beverages, ranked

The research team at St. Andrews University tested 13 common beverages to see how they impact hydration. Here's what they found, ranked from most hydrating over a four-hour period to least.
Skim milk
Oral rehydration solutions (like Pedialyte or Liquid I.V.)
Full fat milk
Orange juice
Cola
Diet Cola
Cold tea
Tea
Sports drink
Still water
Sparkling water
Lager
Coffee
Source: The American Journal of Clinical Nutrition, Volume 103, Issue 3, March 2016, Pages 717--723



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