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Related Concept Videos

Aging01:26

Aging

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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...
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Bone Disorders01:29

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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.
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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,...
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The Effect of Aging on Tissues01:19

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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...
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Cancer Prevention02:59

Cancer Prevention

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Several factors can increase the risk of cancer in an individual. About 50% of cancer cases can be prevented by adopting a healthy lifestyle, regular exercise, eating healthy, and following a modest cancer prevention diet. Epidemiological studies have consistently shown that populations with vegetable and fruit-rich diets have reduced the incidence of cancer. On the other hand, populations who have a diet rich in animal fat, red meat, junk food, or high calories are predisposed to cancer.
Some...
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Energy Budgets00:51

Energy Budgets

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Organisms must balance energy intake with the energy required for growth, maintenance and reproduction. These trade-offs result in a variety of survivorship and reproductive strategies, including semelparity and iteroparity. Semelparous species, like annual plants, have only one reproductive episode in their lifetimes and consequently have short lifespans. Iteroparous species, by contrast, have many reproductive events during their lifetimes but have relatively few offspring. These two...
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Related Experiment Video

Updated: Jun 9, 2025

Quantification of Information Encoded by Gene Expression Levels During Lifespan Modulation Under Broad-range Dietary Restriction in C. elegans
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Dietary diversity contributes to delay biological aging.

Wen Liao1, Meng-Ying Li2

  • 1Department of Nephrology, Pingxiang People's Hospital, Pingxiang, China.

Frontiers in Medicine
|October 24, 2024
PubMed
Summary

Eating a diverse diet is linked to slower biological aging. This healthy aging strategy may reduce oxidative stress and age-related diseases.

Keywords:
NHANESbiological agingdietary diversity scoreglutamyltransferasemediation analysis

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Area of Science:

  • Gerontology
  • Nutritional Science
  • Biochemistry

Background:

  • Aging is a primary risk factor for chronic diseases, necessitating strategies for healthy aging.
  • Dietary diversity's impact on biological aging is not well understood.
  • Promoting healthy aging is crucial for public health.

Purpose of the Study:

  • To investigate the association between dietary diversity and the rate of biological aging.
  • To explore the role of dietary diversity in phenotypic age acceleration.

Main Methods:

  • Utilized data from 22,600 participants in the National Health and Nutrition Examination Survey (NHANES).
  • Assessed dietary diversity using the dietary diversity score (DDS) based on 5 major food groups and 18 subgroups.
  • Determined biological age using phenotypic age and calculated phenotypic age acceleration; employed weighted multivariate regressions.

Main Results:

  • A higher DDS was significantly associated with slower phenotypic age acceleration (p < 0.001).
  • This inverse relationship was consistent across various subgroups.
  • Reduced oxidative stress, indicated by glutamyltransferase levels, partially mediated the link between dietary diversity and aging.

Conclusions:

  • Dietary diversity is associated with a slower biological aging process.
  • Reduced oxidative stress may be a key mechanism linking diet diversity and healthy aging.
  • A varied diet rich in different food groups shows potential for promoting healthy aging and mitigating age-related diseases.