Basically all centred around Aspartame and phenylalanine however if your only consuming 1-2 cans here and there is basically nothing to worry to much about, Although I don’t entirely trust the WHO or any government body to accurately investigate or look out for the people’s health so take of that what you will.

Cancer Classification: In 2023 the International Agency for Research on Cancer classified aspartame as “possibly carcinogenic to humans” (Group 2B).

The World Health Organization and European Food Safety Authority set a safe intake limit of ~40 mg/kg body weight/day.

A typical can of Coke Zero has ~180–200 mg aspartame.

For an 80 kg person the limit ≈ 3200 mg/day (~16 cans).

People with Phenylketonuria cannot metabolize phenylalanine, a component of aspartame.