Understanding FDA Regulations
According to the FDA, diet soda can claim zero calories if it contains less than 5 calories per serving. This allows companies to legally advertise the drink as “calorie-free,” despite the presence of small amounts of calories.
Why It Matters
For consumers, this rounding can be misleading, especially if you consume several servings daily. Those small amounts of calories can accumulate.
Conclusion
Though FDA-approved, diet soda is not truly calorie-free and can still contribute to your calorie intake if consumed excessively.