leptin

IPA/ˈlep.tɪn/
KK[lˈɛptɪn]IPA/ˈlep.tɪn/

leptin — 名詞

1. a hormone produced by the body's fat cells that signals to the brain when the bo

1.名詞C1
釋義

瘦素；瘦體素

脂肪細胞產生的控制食慾荷爾蒙

a hormone produced by the body's fat cells that signals to the brain when the body has enough stored energy, making a person feel less hungry and helping to control weight.

例句

Dr. Chen measured the leptin levels in her patient's blood sample this morning.

陳醫師今早測量了病人血液樣本中的瘦素濃度。

measuring leptin levels in blood

When Fatima lost weight, her leptin levels dropped and she felt hungrier than before.

Fatima 體重下降後，她的瘦素濃度也跟著降低，因此比以前更容易感到飢餓。

leptin levels drop with weight loss

同義詞
  • obesity hormone

    an informal and less precise label used in popular media, not in medical research

  • satiety hormone

    a descriptive nickname emphasizing leptin's role in reducing hunger, but not a technical synonym

反義詞
  • ghrelin

    the 'hunger hormone' produced by the stomach, which has the opposite effect of leptin — it increases appetite

用法筆記

Almost always used as an uncountable noun in medical and scientific writing. The countable form (e.g., 'different leptins') appears only in advanced research contexts describing variants of the hormone.

常見錯誤

❌You can buy leptin supplements to lose weight.
✅The body naturally produces leptin; supplements usually do not work.
💡leptin is a hormone your fat cells make; oral supplements rarely raise levels effectively.
❌Leptin makes you thin.
✅Leptin helps the brain sense when you have enough stored energy.
💡leptin does not directly burn fat; it signals fullness to the brain.