The Taylor Swift recommended Diet Coke turns out to be quite harmful to one's teeth as a new study has shown.

The Temple University School of Dentistry study concluded that continuous consumption of diet soda can in fact damage one's teeth to similar effects of crack cocaine and methamphetamine.

Dr. Mohamed Bassiouny, who lead the study in Philadelphia, claimed that the combination of citric and phosphoric acid in the drink are high enough to erode teeth to make one look like a drug addict.

The study involved a 30-something woman who imbibed 2 liters of diet soda a day for three to five years; a 51-year-old crack habitual user; and a 29-year-old who used methamphetamine for three years while drinking 2-3 cans of soda every day. Their teeth were in similar conditions, with discolored and soften teeth, and severe erosion, the study concluded.

It is evident that not only the consumption of sweet foods can decay teeth. The "massive" and graphic damages to the diet coke drinker's teeth were mostly unsalvageable.

The study suggests that if the soda does not stay in your mouth for too long and if one rinses their mouth after drinking, the effect will not be as severe. But, perhaps, it is better for Taylor to dial it down a notch.