Translation guide
A diet that restricts carbohydrate intake, often for weight loss or health reasons. In Japanese, this concept is commonly expressed using loanwords or descriptive phrases.
Referring to the diet itself in everyday conversation or writing.
The most direct and widely understood term. It combines 'low carbohydrate' (低炭水化物) with 'diet' (ダイエット).
低炭水化物ダイエットを始めました。
I started a low-carbohydrate diet.
Literally 'sugar-restriction diet'. Very common in health and fitness contexts. '糖質' specifically refers to sugars/carbohydrates.
糖質制限ダイエットは効果的だと言われています。
They say a low-carb diet is effective.
Loanword from English 'low-carb diet'. Casual and trendy, often used in magazines or social media.
ローカーボダイエットに挑戦中です。
I'm trying a low-carb diet.
Descriptive phrase meaning 'meals with reduced carbohydrates'. Useful when you want to avoid technical terms.
炭水化物を控えた食事を心がけています。
I try to eat meals low in carbohydrates.
Referring to named diet plans that are low in carbohydrates.
The ketogenic diet, often shortened to 'keto diet'. Well-known among health-conscious people.
ケトジェニックダイエットでは、炭水化物を極端に減らします。
On a ketogenic diet, you drastically reduce carbohydrates.
The Atkins diet. Recognizable by name, but less commonly discussed than keto in modern Japan.
アトキンスダイエットは低炭水化物ダイエットの一種です。
The Atkins diet is a type of low-carbohydrate diet.
Talking about individual food items that are low in carbohydrates.
Common label on food products meaning 'low sugar/carb'. Often seen on packaging.
このパンは低糖質です。
This bread is low-carb.
Trendy term meaning 'carb-off' or 'sugar-free'. Used in marketing for low-carb products.
糖質オフのビールを買いました。
I bought low-carb beer.
Simple descriptive phrase: 'low in carbohydrates'. Natural in conversation.
炭水化物が少ない食事を探しています。
I'm looking for meals that are low in carbohydrates.
Both mean carbohydrates, but '糖質' (sugar) is more common in diet contexts, while '炭水化物' is the formal nutritional term. '糖質制限' specifically implies restricting sugars/starches.
Directly translating 'low-carbohydrate diet' as '低い炭水化物の食事' is unnatural. Use the established terms above.