[loginalready]

As far as I know, the US is the only country where sugar-free soda is referred to as "diet".

The notion that it would help lose weight is totally new to me, I'm presuming that is because most countries outside the US would never allow it to be marketed that way.

[rdouble]

Diet Coke is called Diet Coke in all English speaking countries.

[sharkbrainguy]

It seems like for reduced calorie Coke specifically, it is marketed as "Diet Coke" or "Diet Coca Cola", in at least Australia[1], New Zealand[2], The United Kingdom[3], India, Israel and The US[4].

[1] https://www.coca-cola.com.au/ourdrinks [2] http://coke.co.nz/ [3] http://www.coca-cola.co.uk/brands/diet-coke.html [4] http://en.wikipedia.org/wiki/Diet_coke

[speeder]

Here in Brazil soda is called "diet" too, yes, in english even (correct porgueuse would be "Dietético", wrong portuguese would be "Dieta")

[corresation]

It's called diet here in Canada as well. In any case, diet does not and has never meant "lose weight". If you pay any attention to what you consume, you are "on a diet".

[jdminhbg]

> In any case, diet does not and has never meant "lose weight".

It plainly does, whether that usage makes you happy or not: http://dictionary.reference.com/browse/diet?s=t

[corresation]

One of five possible definitions includes losing weight in no universe means that diet means "lose weight" -- you don't get to choose what Diet means on a can of soda.

Diet is nothing more than the things you eat, and a "diet" can be to lose, gain, maintain weight, or simply to pay attention to what you eat for the purposes of healthy eating. A diet soda is a soda modified to reduce/eliminate sugar, which again is in no way manifestly correlated with losing weight.