Sports Drinks Dissolve Your Teeth...

High acidity levels designed to keep sports drinks on the shelf longer can dissolve tooth enamel, the hard dentine underneath and expose the pulp of the tooth, a study found. In fact, sports drinks meant to rehydrate the body are up to 30 times more erosive to your teeth than water.
Interestingly, athletes who drink the sports drinks are more at risk because their activity levels decrease saliva production. This, in turn, leads to a drier mouth, which doesn't contain enough saliva to regulate the drinks' acidity levels. Plus, since athletes sweat a lot they drink more than most people.
In the study, active participants wore mouth protectors that had enamel samples mounted into the gum shield over their own teeth.

Researchers were able to formulate, using low-erosion technology, a sports drink that was less erosive, and less harmful, to teeth. They stressed that fruit juices and other fizzy drinks can cause similar erosive problems to sports drinks.After a good run or heavy-duty dose of weight training, you may be inclined to reach for one of the many popular "rehydrating" sports drinks your local gym or supermarket sells. There are many reasons why you shouldn't, and this study brings up a good one: they can corrode your teeth.

This is a bad thing.

Ironically, drinking sports drinks when you exercise and your mouth is dry is particularly problematic because you don't have enough saliva in your mouth to combat the drink's acidity. And, if you think fruit juice or soda are better alternatives, similar corrosive problems have been found with them too.
There are situations where wise uses of healthy sports drinks are an option. However, this is far less than 1 percent of those that use them. The only indication for these drinks is in those who are vigorously exercising in cardiovascular aerobic activity for more than 45 minutes or an hour (at a minimum) and are sweating profusely as a result of the activity.
Anything less than 45 minutes will simply not result in a large enough fluid loss to justify using these drinks. But even if you are exercising for more than an hour I still believe that there are likely far better options to rehydrate and this new study supports that belief.

This is largely because soft drinks, energy drinks and fruit drinks are tainted with sugar. Studies have shown that some fruit juices contain as much as 8 teaspoons of fructose per 8-ounce glass. Additionally nearly all fruit juices are pasteurized which further damages the fluid. Energy drinks can contain up to 80 mgs of caffeine and many of the sports drinks contain high fructose corn syrup. If you aren't aware of the dangers of fructose please review the excellent AJCN journal article on this topic. The best bet for your primary fluid is clean, fresh water.

So by all means, get out there and take advantage of the spring weather by hiking, jogging, walking, playing tennis--anything to be active. But leave the sports drinks at home, or, better yet, back on the supermarket shelf and bring some water with you instead.

Beverage alternative:
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