相关实验视频
Updated: Jul 13, 2025

12:49
Measuring Caenorhabditis elegans Life Span on Solid Media
Published on: May 12, 2009
30.0K
饮食中的宏观营养素摄入量与生物衰老之间的关系:对NHANES数据的横截面分析
Xu Zhu1,2, Jing Xue3, Rehanguli Maimaitituerxun4
1Department of Nephrology, Xiangya Hospital, Central South University, No.87 Xiangya Road, Kaifu District, Changsha, 410008, Hunan, China.
European journal of nutrition
|October 16, 2023
概括
食纤维,优质的碳水化合物,植物蛋白质和omega-3脂肪酸可以防止生物衰老加速. 相反,低质量的碳水化合物和和脂肪可能会增加它,这表明饮食改变可以改善健康.
科学领域:
- 营养科学 营养科学
- 老年学是指老年学的学科.
- 生物统计学 生物统计学
背景情况:
- 生物年龄,生理健康的衡量标准,可以相对于时间年龄来说加速或减缓.
- 宏观营养素摄入量是一个可改变的因素,可能会影响生物衰老过程.
研究的目的:
- 在大量成年人群中调查宏观营养素摄入量与生物衰老加速 (AA) 之间的关联.
主要方法:
- 利用来自美国国家健康和营养检查调查 (NHANES) 的26381名美国成年人的数据.
- 使用Klemera-Doubal方法 (KDM) 和PhenoAge算法估计的生物年龄.
- 计算了生物衰老加速 (AA) 和分析了与饮食中巨量营养素摄入量的关联.
主要成果:
- 食纤维,高质量的碳水化合物,植物蛋白和omega-3多不和脂肪酸 (PUFA) 与AA的降低有关.
- 低质量的碳水化合物和长链和脂肪酸 (SFA) 与AA的增加有关.
- 经过调整以考虑混因素后,关联仍然很重要.
结论:
- 富含纤维,优质碳水化合物,植物蛋白和欧米茄-3 PUFA 的饮食模式可能会对加速生物衰老产生保护作用.
- 相反,高含低质量的碳水化合物和长链SFAs的饮食可能会促进更快的生物衰老.
- 通过饮食干预来改变宏观营养素摄入量可能是预防与年龄有关的疾病和改善整体健康的策略.
相关概念视频
Aging
59
Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
59
The Effect of Aging on Tissues
2.1K
Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...
2.1K
Mitochondria
13.6K
Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...
13.6K
Bone Disorders
3.6K
Aging and its effect on bone remodeling is the most common cause of bone disorders. In young and healthy people, bone deposition and resorption happen at an equal rate to maintain optimal bone health.
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
3.6K
Longitudinal Research
12.0K
Sometimes we want to see how people change over time, as in studies of human development and lifespan. When we test the same group of individuals repeatedly over an extended period of time, we are conducting longitudinal research. Longitudinal research is a research design in which data-gathering is administered repeatedly over an extended period of time. For example, we may survey a group of individuals about their dietary habits at age 20, retest them a decade later at age 30, and then again...
12.0K
Cross-Sectional Research
11.3K
In cross-sectional research, a researcher compares multiple segments of the population at the same time. If they were interested in people's dietary habits, the researcher might directly compare different groups of people by age. Instead of following a group of people for 20 years to see how their dietary habits changed from decade to decade, the researcher would study a group of 20-year-old individuals and compare them to a group of 30-year-old individuals and a group of 40-year-old...
11.3K

