Translation guide
A dietary approach that restricts carbohydrate intake, often for weight loss or health reasons. In Japanese, this concept is commonly expressed using loanwords or descriptive phrases.
The most common and neutral way to refer to a low-carb diet in everyday conversation.
The standard, formal term. Literally 'low-carbohydrate diet'. Widely understood.
I started a low-carb diet.
Very common in Japan. Literally 'sugar-restriction diet'. Often used interchangeably with low-carb.
Loanword from English 'low-carb diet'. Casual and trendy, often used in fitness contexts.
Does a low-carb diet really work?
When talking about specific dishes or products that are low in carbohydrates.
Expressing that someone adheres to a low-carb way of eating as a habit.
Both mean low-carb, but 糖質制限 (sugar restriction) is more common in Japanese media and diet trends. 低炭水化物 is more clinical. In practice, they are interchangeable.
糖質オフ is a marketing term, not a medical one. It implies reduced carbs, not necessarily zero. It's safe for casual use when talking about products.
Low-carb diets are popular.
I'm skipping carbs at dinner.