When it comes to quenching thirst, water has always been the go-to. However, a study conducted by Scotland’s St. Andrews University has shown that water is not the most hydrating drink.
The researchers found that drinks with little sugar, fat or protein are more effective at keeping us hydrated for longer.
The volume of a drink is a key factor in hydration. The more we drink, the faster the liquid is emptied from the stomach and absorbed into the bloodstream, hydrating our body. Furthermore, the nutrient composition of a drink also affects its ability to keep us hydrated.
For example, milk was found to be even more hydrating than water due to its lactose, protein, and fat content, which slows stomach emptying and prolongs hydration.
However, not all drinks with sugars are equally hydrating. Fruit juices or sugary drinks may take longer to empty from the stomach and seem more hydrating than water, but their high concentration of sugars causes water to be drawn out of the body into the small intestine, reducing its hydrating effect.
Although hydration is crucial for the proper functioning of our body, most people do not need to worry too much about the choice of their drinks. Thirst is a good indicator of when we need fluids, and water is still the healthiest option for most situations.
However, for athletes who train in hot conditions or for people who work long hours without a break, hydration can become a critical issue.
Alcohol and caffeine also influence our hydration. Alcohol acts as a diuretic, increasing the amount of urine, while caffeine can have mild diuretic effects, especially in large amounts. In general, staying hydrated is essential for well-being, the health of our joints, the prevention of infections and the transport of nutrients to our cells.
Although water remains the most reliable option for staying hydrated, the study highlights that other beverages, such as milk and isotonic drinks, may be more effective in certain situations. As always, it’s important to listen to our body’s signals and drink when we’re thirsty. For athletes and situations with high hydration demands, choosing the right beverage can make the difference between good performance and fatigue.
