来自肠道的食欲激素不能解释人类在低碳水化合物和低脂肪饮食后的能量摄入量差异
Aaron Hengist1, Christina M Sciarrillo1, Juen Guo1
1National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, USA.
Obesity (Silver Spring, Md.)
|August 8, 2024
概括
低碳水化合物 (LC) 饮食增加了像GLP-1和GIP这样的食欲激素,但也导致了随后更高的能量摄入量. 短期内,肠道激素并不总是决定卡路里消耗.
科学领域:
- 营养科学 营养科学
- 内分泌学 在内分泌学.
- 代谢过程中的代谢.
背景情况:
- 饮食中的宏观营养素成分显著影响生理反应.
- 食欲调节是激素和能量摄入的复杂相互作用.
- 了解肠道衍生激素在食欲控制中的作用对于体重管理至关重要.
研究的目的:
- 调查低脂肪 (LF) 与低碳水化合物 (LC) 饮食对食后食欲激素特征的影响.
- 为了评估不同的饮食宏观营养素组成后的随意能量摄入量.
- 探索激素反应与能源消耗之间的关系.
主要方法:
- 一项随机交叉研究,涉及20名成年人,每人服用LF和LC饮食2周.
- 在测试餐后测量食用后食欲激素水平 (GLP-1,GIP,PYY, ghrelin,leptin).
- 测试后一天剩余时间的随意能量摄入量的量化.
主要成果:
- 与LF饮食相比,LC饮食导致食欲刺激激素 (GLP-1,GIP,PYY) 的水平升高.
- 相反,LC饮食导致饥饿刺激激素 (格列林) 和瘦素水平降低.
- 尽管发生了荷尔蒙变化,但参与者在LC饮食后的午餐和晚餐都消耗了显著更多的能量,导致了更高的每日总摄入量.
结论:
- 短期的饮食干预与不同的巨量营养素组成引起不同的胃口激素反应.
- 肠道内源性食欲激素不仅仅是短期内决定自由自在的能量摄入量.
- 这些发现表明,急性荷尔蒙信号与随后的能量消耗模式之间存在分离.
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