That cup of joe that jolts you awake in the morning is pretty safe when it comes to contaminants and toxins, a new investigation has found . Well … almost.

"While some contaminants were present, most were found at minimal levels and well below the European Union's safety limits per 6-ounce serving. This means coffee is generally safe," said Molly Hamilton, executive director of the nonprofit Clean Label Project, which conducted the investigation into caffeinated coffees.

That's great news because coffee has a stellar résumé: Studies have found drinking about 3 cups of black coffee a day provides health benefits, such as reducing risk for such issues as heart disease , multiple sclerosis , type 2 diabetes , liver disease , prostate cancer , stroke, dementia and more.

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