(HealthDay News) — While energy drinks are promoted as products that increase energy and enhance performance, they also can put users at risk.

From 2007 to 2011, energy-drink related emergency room visits doubled. Overconsumption of energy drinks can cause a host of issues, the U.S> National Institutes of Health says.

The NIH warns that excessive consumption can result in:

  • Sleep disturbances.
  • Anxiety.
  • Digestive problems.
  • Dehydration.
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