长达4周的果丰富饮食改善了老年成人食后脂质过氧化
Betsy Cogan1, Regis C Pearson2, Nathan T Jenkins2
1Department of Nutritional Sciences, University of Georgia, Athens, Georgia, USA.
Journal of medicinal food
|August 28, 2023
概括
在健康的老年人中,每天食用坚果果对抗氧化剂状况或葡萄糖水平没有显著变化. 然而,经过四周的干预后, pecans 帮助减少了饭后的氧化压力,这表明它对这种类型的压力有保护作用.
科学领域:
- 营养科学 营养科学
- 老年学是指老年学的学科.
- 心脏代谢健康状况
背景情况:
- 核桃含有具有潜在抗氧化和葡萄糖调节功效的生物活性化合物.
- 以前的研究表明,果丰富的饮食可能会改善心脏代谢健康,但对老年人的数据有限.
- 氧化应激和血糖控制受损是老龄化人口的重大问题.
研究的目的:
- 为了研究4周的坚果丰富饮食对健康老年人的抗氧化状态,氧化应激和血糖标志物的影响.
- 为了评估禁食和食后马隆迪阿尔海德水平的变化,总抗氧化能力 (TAC),葡萄糖和胰岛素.
主要方法:
- 一个随机,并行,受控试验,涉及41名年龄在50-75岁的健康成年人.
- 参与者被分配每天消费68g的 pecans 或避免所有坚果 (控制) 4周.
- 血液样本在基线和干预后收集,既是禁食的,也是高和脂肪饮食后间隔 (30,60,120分钟) 的.
主要成果:
- 在断食或食后的TAC,葡萄糖或胰岛素中,没有观察到北瓜和对照组之间的显著差异.
- 与对照组 (P=0.06) 相比,在坚果果组中发现了减少禁食脂质过氧化的趋势.
- 在干预结束时,北瓜群体的食后脂质过氧化显著抑制 (P=0.03).
结论:
- 一个月的坚果丰富饮食表明,在健康的老年人中,对饭后氧化应激有保护作用.
- 该研究没有发现显著的葡萄糖调节益处,这表明可能需要更长的干预措施或糖尿病人群的研究.
- 坚果的消费可能是减轻老年人氧化压力的有益饮食策略.
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