近期一项发表于《自然·衰老》期刊的研究指出，规律午睡可能与大脑衰老速度减缓密切相关。研究人员对超过3.5万名参与者进行了长期追踪，结合基因数据分析发现，有规律午睡习惯的人群，其大脑总体积更大，尤其在海马体等与记忆和认知功能密切相关的区域表现更为显著。研究进一步表明，这些人的‘大脑年龄’平均比不午睡者年轻2.5至6.5岁。科学家推测，午睡可能通过促进神经修复、清除代谢废物以及调节压力激素水平等方式，保护大脑结构与功能。值得注意的是，该研究强调‘适度’午睡（通常指20-30分钟）效果最佳，过长反而可能导致认知迟钝或睡眠惯性。当然，研究也提醒，相关性不等于因果性。有些人可能因潜在健康问题而更需要午睡，因此个体差异不可忽视。但总体而言，这项研究为‘午睡有益大脑健康’提供了新的科学依据，也为延缓认知衰退、预防老年痴呆等神经退行性疾病提供了潜在的生活方式干预方向。
A recent study published in the journal Nature Aging suggests that regular napping may be closely linked to a slower rate of brain aging. Researchers tracked over 35,000 participants long-term and combined genetic data analysis to find that individuals with consistent napping habits tended to have larger overall brain volumes—particularly in regions like the hippocampus, which is crucial for memory and cognitive function. The study further indicated that these individuals’ ‘brain age’ was on average 2.5 to 6.5 years younger than those who didn’t nap.Scientists hypothesize that napping may protect brain structure and function by promoting neural repair, clearing metabolic waste, and regulating stress hormones. Importantly, the study emphasized that ‘moderate’ naps—typically 20 to 30 minutes—yielded the best outcomes, while longer naps could lead to cognitive sluggishness or sleep inertia.However, the researchers caution that correlation does not imply causation. Some individuals may nap more due to underlying health issues, so individual differences must be considered. Nonetheless, this study provides new scientific support for the idea that napping benefits brain health and offers a potential lifestyle intervention to delay cognitive decline and prevent neurodegenerative diseases like Alzheimer’s.
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