The effect of diet fizzy drinks upon our health has long been debated - while they technically contain no calories, experts worry that the artificial sweeteners in them have a different negative impact on our bodies.
And the latest concern is all about women’s fertility, as the results of a new study suggest that women who drink "diet" soft drinks, could be reducing their chances of getting pregnant.
Researchers from the Federal University of Sao Paulo found a link between the artificial sweeteners in "diet" drinks and lower fertility rates.
Sugary drinks weren’t found to be good for those trying to conceive, either - consuming sugar in soft drinks or added to coffee was associated with poorer quality of eggs and embryos.
In the study, a batch of women undergoing IVF treatment were asked about what foods, soft drinks and hot drinks they consumed.
The researchers found an association between reduced pregnancy rates and drinking soft drinks made with artificial sweeteners (or coffee with added artificial sweeteners).
Coffee fans need not worry, however - while using sugar in soft drinks and coffee was associated with a poorer quality of egg, unsweetened coffee wasn’t found to have an effect on pregnancy chances at all.
Professor Adam Balen, Chairman of the British Fertility Society, told The Telegraph: “This is a very interesting study that suggests the false promise of artificial sweeteners that are found in soft drinks and added to drinks, such as coffee, may have a significant effect on the quality and fertility of woman’s eggs and this may further impact on the chances of conception.”
Perhaps artificial sweeteners were too good to be true after all.