碳水被過度污名化了嗎? - 健身

By Rosalind
at 2023-06-20T02:09
at 2023-06-20T02:09
Table of Contents
hi,all
突然看到一位醫生討論 Science的文章
不知道大家有什麼看法呢?
============
王介立醫師
「吃越多碳水,胰島素越高,越多碳水因此被轉成脂肪儲存,
其它非脂肪組織缺乏能量,身體因此越飢餓,就容易吃下更多熱量,
因而吃高碳水者較易胖。」
上述這句話,基本上大半已經被證實是錯的,這段話也是
碳水化合物胰島素模型(carbohydrate insulin model)的核心內容。
在動物的進食研究,提供固定比例的蛋白質,操控碳水化合物及
脂肪的比例從10~80%不等,結果發現,高碳水反而讓小鼠攝取較低的總熱量,
且體重上升較低(雖然胰島素較高)。在人類的實驗,雖然無法像
動物實驗進行的那麼長久且精準,但基本上也顯示高碳水飲食並不會
導致較高的總熱量攝取,高碳水組整體而言攝取較少的熱量而且
飽足感與高脂肪組相似。
一個比較新的模型,為能量平衡模型(energy balance model)。在此模型,
胰島素抑制食慾的角色被放大,胰島素與其它來自脂肪的荷爾蒙,可作用在
大腦並抑制食慾。
總之,碳水及胰島素已經被來自非科學實證的想像給過度污名化,
而高油脂飲食也未必是造成肥胖及心血管疾病之主因。
本文內容及圖片,來自Science期刊。
Speakman, J. R. and K. D. Hall (2021). "Carbohydrates, insulin,
and obesity." Science 372(6542): 577-578.
https://www.science.org/doi/full/10.1126/science.aav0448
============
FB來源:
https://tinyurl.com/2er6xc64
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