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Is Water Really the Best for Hydration?
Let?s clear one thing up right away: this isn?t about downplaying the importance of water. Nearly every living being relies on it to function and stay alive?it?s the wellspring of existence. We could shower water with compliments all day, but let?s stay objective: is it genuinely the drink that hydrates us best?
At first glance, the answer seems obvious. The best way to hydrate your body? Drink water, right? Well? not quite. To really dig into this, it helps to look at what water is, chemically speaking. Dihydrogen monoxide, or H2O, is water?s chemical formula?but that?s for distilled water, which isn?t what most of us drink. The water we sip from the tap or in bottles contains other compounds, like minerals.
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Minerals, Electrolytes, and What Actually Hydrates You
Mineral water is actually better for hydration, especially because we?re used to it. On the other hand, drinking distilled water over time can throw off our electrolyte balance. Electrolytes are vital substances?think magnesium, potassium, and calcium?which attach to water molecules and, thanks to their electric charge, regulate many of our body?s chemical reactions, like fluid balance. So, if you want to hydrate as efficiently as possible, you?d need a drink loaded with these electrolytes.
Oral Rehydration Solutions: The Unsung Hydration Heroes
The first answer that might come to mind here is oral rehydration solution. You know, those handy little sachets you give to babies to rehydrate them as quickly and effectively as possible, especially after bouts of diarrhea or stomach bugs, when their bodies lose a lot of fluid. These powdered mixes add essential salts and other compounds to help limit the loss of water, electrolytes, and other nutrients. Handy, right?
The Real Hydration Ranking, According to Science
With so many drinks out there?some sweet, some fruity, some not so much?it?s tough to gauge which really does the best job of hydrating us. You won?t find this info on product labels, so a research team at the University of St Andrews School of Medicine in Scotland took matters into their own hands and conducted a study to settle the question once and for all.
They looked at a few main criteria, including how quickly a drink hydrates you, and how long it keeps you hydrated based on the amount you drink. Their findings? Drinks that contain a bit of lactose, protein, and fat help slow down how fast fluids leave the body, keeping you hydrated for longer.
- Surprise: Skimmed milk landed in first place, with a Beverage Hydration Index score of 99%.
- Oral rehydration solutions?with their mix of minerals and elements helping you retain water?tied for the top spot.
- Whole milk also scored 99%.
- Orange juice edged out plain water at 95%.
Surprising results, right? But the researchers made it clear: this study wasn?t about the impact of swapping out water entirely for one of these drinks. Since the difference in hydration is actually very slight between water and other beverages, choosing an alternative really only makes sense for specific groups?like older adults, infants, or people with disabilities who struggle to drink larger quantities of fluids.
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