This is the 3858th most frequent Japanese word.
インスリン
Insulin, a hormone that regulates blood sugar levels.
The word 'インスリン' is used as the subject of the sentence, referring to the medical concept of insulin as a substance.
インスリンは血糖値を調節するホルモンです。
Insulin is a hormone that regulates blood sugar levels.
Here, 'インスリン' is used in the context of a medical necessity, referring to the injections containing insulin.
彼はインスリン注射が必要です。
He needs insulin injections.
In this sentence, 'インスリン' is used as part of a phase describing its physiological secretion process in the body.