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関連する概念動画

The Effect of Aging on Tissues01:19

The Effect of Aging on Tissues

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...
Bone Disorders01:29

Bone Disorders

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...
Changes in the Appendicular Skeleton with Age01:09

Changes in the Appendicular Skeleton with Age

The upper and lower limb initially develops as a small bulge called a limb bud, which appears on the lateral side of the early embryo. The upper limb bud appears near the end of the fourth week of development, with the lower limb bud appearing shortly after.
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...
Life Tables01:22

Life Tables

A life table is a statistical tool that summarizes the mortality and survival patterns of a population, providing detailed insights into the likelihood of survival or death across different age intervals within a cohort. By organizing data on survival probabilities and mortality rates, life tables offer a clear snapshot of population dynamics over time. They are extensively used in demography, public health, actuarial science, and ecology to analyze life expectancy, design health interventions,...
Applications of Life Tables01:22

Applications of Life Tables

Life tables are versatile across various fields, providing a quantitative basis for analyzing mortality and survival rates. Whether used by demographers, actuaries, epidemiologists, or sociologists, life tables offer valuable insights into the dynamics of life and death, facilitating informed decisions in public health, insurance, conservation, and beyond. Their broad applicability highlights the interconnectedness of demographic data with practical outcomes in everyday life and strategic...
Derivatives: Problem Solving01:26

Derivatives: Problem Solving

Temperature-Dependent Growth of Brook TroutThe growth of brook trout is closely influenced by water temperature. Experimental data demonstrate how trout weight changes over a 24-day period in response to varying water temperatures. At lower temperatures, such as 15.5 degrees Celsius, brook trout show significant weight gain. However, as the temperature increases, the amount of weight gained steadily decreases. At the highest temperature measured, 24.4 degrees Celsius, trout experience a net...

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関連する実験動画

Updated: Jul 18, 2026

Measurement of Lifespan in Drosophila melanogaster
10:00

Measurement of Lifespan in Drosophila melanogaster

Published on: January 7, 2013

体重の変化と長寿

I M Lee1, R S Paffenbarger

  • 1Department of Epidemiology, Harvard University School of Public Health, Boston, Mass 02115.

JAMA
|October 31, 1992
PubMed
まとめ

体重の大幅な変動,つまり体重の減少と増加は,死亡リスクの増加と関連しています. 安定した体重を維持することは,全原因および冠動脈疾患による死亡率が最も低いことと関連しています.

科学分野:

  • エピデミオロジー エピデミオロジー
  • ゲロントロジーはゲロントロジーの学科です.
  • 公衆衛生は公衆衛生である.

背景:

  • 体重の変動は一般的ですが,健康への長期的な影響は依然として公衆衛生上の重大な懸念事項です.
  • 体重変化と死亡率の関係を理解することは,効果的な健康介入の開発に不可欠です.

研究 の 目的:

  • 体重変化と全原因,冠動脈疾患,がん死亡率との関連を調査する.
  • 体重サイクルが長寿に影響するかどうかを判断する.

主な方法:

  • コーホート分析研究では,1977年から1988年まで,ハーバード大学の11,703人の卒業生 (平均年齢58歳) を追跡調査した.
  • 体重の変化は,1962/1966年と1977年に実施されたアンケートからの自己報告データに基づいて評価されました.
  • 死亡率のデータ (全原因,冠動脈疾患,がん) は,死亡証明書から得られた.

主要な成果:

  • 最も低い全因死亡率は,安定した体重 (+/- 1 kg) の個体で観察されました.
  • すべての原因および冠動脈疾患による死亡率の大幅な増加は,実質的な体重減少 (> 5 kg) と体重増加 (> 5 kg) と関連していました.
  • 体重の変化は癌による死亡率を予測できず,喫煙,身体活動,体量指数とは無関係であった.

さらに関連する動画

Surveying Low-Cost Methods to Measure Lifespan and Healthspan in Caenorhabditis elegans
10:08

Surveying Low-Cost Methods to Measure Lifespan and Healthspan in Caenorhabditis elegans

Published on: May 18, 2022

Frailty Assessment in an Aging Mouse Model
06:58

Frailty Assessment in an Aging Mouse Model

Published on: September 23, 2025

関連する実験動画

Last Updated: Jul 18, 2026

Measurement of Lifespan in Drosophila melanogaster
10:00

Measurement of Lifespan in Drosophila melanogaster

Published on: January 7, 2013

Surveying Low-Cost Methods to Measure Lifespan and Healthspan in Caenorhabditis elegans
10:08

Surveying Low-Cost Methods to Measure Lifespan and Healthspan in Caenorhabditis elegans

Published on: May 18, 2022

Frailty Assessment in an Aging Mouse Model
06:58

Frailty Assessment in an Aging Mouse Model

Published on: September 23, 2025

結論:

  • 意図的および非意図的な体重減少および増加は,全原因および冠動脈疾患による死亡率の増加と関連しています.
  • 体重サイクリングは,死亡リスクの増加に寄与する要因である可能性があります.
  • 安定した体重を維持することは長寿にとって最適であるようです.