Four years ago Samantha Jenkins collapsed and fell into a coma, before dying a few days later in hospital.
On Tuesday an inquest heard that chewing gum may have played role in the 19-year-old’s death in 2011.
Tests from the post mortem examination showed that Samantha, from Llanelli in south Wales, had low calcium, magnesium, sodium and potassium levels.
This may have been the result of malabsorption caused by chewing gum in her stomach.
Chewing gum is made up of five basic ingredients: gum base, flavourings and colourings, preservatives, sweeteners, and softeners.
Some gum contains the sweetener aspartame, which has in the past been linked to liver damage and cancer.
However in December 2013 the European Food Safety Authority produced a comprehensive review looking into the sweetener.