研究人员们观察了这些女性细胞内的遗传物质,尤其是她们端粒的长度。这些位于染色体末端的小帽子能够保护染色体不受损。人们在变老的过程中,端粒也会自然缩短,但这个结构在每个人身上变短的速度均不同。一个人的端粒越长,他们的细胞理论上能够分裂的次数就越多。并且,端粒也被科学家们视为生理年龄的标记,即一个人的细胞年龄,而不是他们的实际年龄。
Women in the survey who said they'd given birth to at least one child had telomeres that were about 4 percent shorter, on average, than those of women who'd never given birth. The findings held even after the researchers took into account other factors that could affect telomere length, including the women's chronological age, body mass index and smoking habits.
在研究中,至少生过一个孩子的女性端粒长度平均比那些未生产过的女性短百分之四。即便研究人员们考虑了其它能影响端粒长度的因素(比如她们的实际年龄、身体质量指数和吸烟习惯),这些发现依旧站得住脚。
These findings suggest that a "history of live birth may be associated with shorter telomeres," the researchers wrote in their abstract, which was presented at the meeting of the American Public Health Association in Denver.
这些发现表明生产史可能与更短的端粒之间存在着联系。该研究的概述在美国公共卫生协会于丹佛市举办的会议上发布。
【生孩子真的会让你“折寿”吗?】相关文章:
最新
2019-01-07
2019-01-07
2019-01-07
2019-01-07
2019-01-07
2019-01-05