72 小时的研究表明，17 个表观遗传时钟中有 13 个存在显著的每日变化。 72-hour study reveals significant daily variations in 13 out of 17 epigenetic clocks.

新研究表明，表观遗传时钟（根据基因修饰来测量生物年龄）可能由于日常波动而不像以前认为的那样准确。 New research suggests that epigenetic clocks, which measure biological age based on genetic modifications, may not be as accurate as previously believed, due to daily fluctuations. 《衰老细胞》杂志发表的一项研究在 72 小时内每隔三小时分析一次单个个体的血液样本，发现 17 个表观遗传时钟中有 13 个表现出显著的每日变化，早上的细胞比中午年轻 5.5 岁。 A study published in Ageing Cell analyzed blood samples from a single individual every three hours over a 72-hour period and found that 13 out of 17 epigenetic clocks exhibited significant daily variations, with cells appearing 5.5 years younger in the morning compared to midday.