There have been no studies of the effects of a low carbohydrate diet on pregnancy, so its effect on the fetus, if any, is unknown.

目前还没有关于怀孕时低碳水化合物饮食影响的研究，因此如果它对胎儿有什么影响也是不知道的。

youdao

Traditional products like yogurt and chocolate were available in the low sugar or low carbohydrate variety.

传统食品，如酸奶和巧克力，都推出了低糖或低脂配方。

youdao

There have been no studies of the effects of a low carbohydrate diet on pregnancy, so its effect on the fetus, if any, are unknown.

目前为止还没有关于怀孕时低碳水化合物饮食影响的研究，因此如果对胎儿有什么影响也是不知道的。

youdao

The magazine said one book gave "potentially dangerous advice on doing a vigorous workout on an empty stomach and with low carbohydrate intake, which could lead to dizziness and fainting".

BBC: Health risk of 'faddy diets'

But Which? expressed concern about fashionable "low carbohydrate" diets.

BBC: Health risk of 'faddy diets'

They are generally less sweet than sucrose (table sugar), so they are often mixed with very sweet artificial sweeteners like aspartame, sucralose and acesulfame potassium, to form a palatable substitute in low sugar, low carbohydrate, and diabetic or "diet" products.

CNN: Is no-sugar ice cream really a healthier alternative?