Dr Shubham Vatsya, a gastroenterologist and hepatologist at Fortis Vasant Kunj, has weighed in on the debate between Diet Coke and regular Coke, revealing which beverage is slightly less harmful for health. While quitting carbonated soft drinks entirely remains the best option, Dr Vatsya explains why Diet Coke may be a safer alternative for those unable to give up soda.
According to Dr Vatsya, a single can of regular Coke contains about 39 grams of sugar, equivalent to 10 to 11 teaspoons. Consuming sugary sodas daily can strain the liver, increase insulin resistance, and raise the risk of type 2 diabetes by 26 percent, according to Harvard Health.
Diet Coke, on the other hand, does not contain sugar but is sweetened with artificial sweeteners such as aspartame. While these sweeteners may slightly impact the gut microbiome, they are calorie-free and do not spike blood sugar levels. Referencing a 2023 WHO report, Dr Vatsya noted that although artificial sweeteners are not ideal, they are generally safer than excessive sugar intake.
Dr Vatsya emphasized, “Diet Coke does not have sugar. It has artificial sweeteners such as aspartame. These may mildly disturb gut bacteria but do not increase blood sugar. Quitting Coke is best, but if you cannot, Diet Coke is the lesser harmful option. Avoid making it an addiction.”
The expert also highlighted that habitual consumption of regular Coke can push the liver toward insulin resistance and elevate diabetes risk, making moderate choices critical for long-term health.
In conclusion, while neither option is perfect, Diet Coke is the “lesser evil” compared to regular Coke for people seeking a lower-sugar alternative without giving up fizzy drinks entirely.