noun
sugariness; saccharinity; carbohydrate
Primarily a technical term for carbohydrate, but can also refer to the quality of being sugary. Often used in dietary and nutritional contexts.
See also: 炭水化物
糖質の摂りすぎに注意してください。
Be careful not to consume too many carbohydrates.
この食品は糖質が高い。
This food is high in sugar/carbohydrates.
noun
Internet slang, derogatory. A homophone-based pun on 統合失調症 (とうごうしっちょうしょう), abbreviated as 統失 (とうしつ). Used to insult someone by calling them schizophrenic.
See also: 統失
ネットで「糖質」と書いてあるのは、たいてい統合失調症のことを指している。
When you see '糖質' written online, it usually refers to schizophrenia.
あの書き込み、完全に糖質だろ。
That post is totally schizo.
糖 (sugar) + 質 (quality/substance). The slang sense is a homophone-based pun on 統合失調症 (schizophrenia), specifically its abbreviation 統失 (とうしつ).