Diet Coke and Coke Zero Use Different Artificial Sweeteners, Have Varying Caffeine and Health Concerns

Both Diet Coke and Coke Zero contain artificial sweeteners aspartame and acesulfame potassium (Ace-K) deemed safe by FDA in moderation

Key difference is Diet Coke sweetened only with aspartame, while Coke Zero also contains Ace-K

Diet Coke has more caffeine (46mg per can) than Coke Zero (34mg per can)

French study linked aspartame to increased stroke risk and Ace-K to higher coronary artery disease risk

Dietitian concludes diet sodas should be enjoyed in moderation like regular soda, choose the one you like more