老化は44歳と60歳で急激に進行、疾病リスクも増大
Aging progresses rapidly at ages 44 and 60, and disease risk also increases
Aging progresses rapidly at ages 44 and 60, and disease risk also increases
人生には老化が急激に進む時期が2回あるという研究結果が発表された
A new study has revealed that there are two periods in life when aging accelerates rapidly.
A new study has revealed that there are two periods in life when aging accelerates rapidly.
最初は44歳、次は60歳の頃に、分子の急激な老化が起きるという
Rapid molecular aging occurs, first at age 44, then again at age 60.
Rapid molecular aging occurs, first at age 44, then again at age 60.
研究結果は米スタンフォード大学とシンガポールの南洋理工大学の研究チームが科学誌ネイチャー・エイジングに発表した
The research results were published in the scientific journal Nature Aging by a research team from Stanford University in the United States and Nanyang Technological University of Singapore.
The research results were published in the scientific journal Nature Aging by a research team from Stanford University in the United States and Nanyang Technological University of Singapore.
108人を対象に、加齢による分子(RNA、たんぱく質、マイクロバイオーム)の変化を数年間にわたって観察した結果、老化は徐々に進行しているわけではないことが判明
By observing age-related molecular changes (RNA, proteins, microbiome) in 108 people over several years, it was found that aging is not a gradual process.
By observing age-related molecular changes (RNA, proteins, microbiome) in 108 people over several years, it was found that aging is not a gradual process.
44歳と60歳の2回、急激に老化が進む時期があることが分かった
It was found that there are two periods of rapid aging, at ages 44 and 60.
It was found that there are two periods of rapid aging, at ages 44 and 60.
スタンフォード大の研究者によると、例えばカフェインを代謝する能力は、まず40歳前後で目に見えて低下し、続いて60歳前後で再び低下する
According to Stanford University researchers, the ability to metabolize caffeine, for example, first noticeably declines around age 40, and then declines again around age 60.
According to Stanford University researchers, the ability to metabolize caffeine, for example, first noticeably declines around age 40, and then declines again around age 60.
アルコールの代謝にかかわる成分も、特に40歳前後で減少するという
Components involved in alcohol metabolism also decrease, especially around the age of 40.
Components involved in alcohol metabolism also decrease, especially around the age of 40.
40代では脂質代謝の関係で筋肉を傷める人や脂肪が蓄積する人が多く、60代になるとサルコペニア(筋肉量の減少)に見舞われると研究者は指摘する
Researchers point out that many people in their 40s suffer from muscle damage and fat accumulation due to lipid metabolism, and by their 60s they are at risk of sarcopenia (loss of muscle mass).
Researchers point out that many people in their 40s suffer from muscle damage and fat accumulation due to lipid metabolism, and by their 60s they are at risk of sarcopenia (loss of muscle mass).
この両方の年代で組織をつなぎとめるたんぱく質が変化して、そのために皮膚や筋肉、心血管系の変化が起きると思われる
At both ages, changes in proteins that hold tissues together appear to lead to changes in skin, muscle and the cardiovascular system.
At both ages, changes in proteins that hold tissues together appear to lead to changes in skin, muscle and the cardiovascular system.
60歳を過ぎると疾病リスクも高くなり、心血管系の疾患や腎臓病、2型糖尿病にかかりやすくなることも分かった
The study also found that people over 60 are at higher risk of disease, including cardiovascular disease, kidney disease, and type 2 diabetes.
The study also found that people over 60 are at higher risk of disease, including cardiovascular disease, kidney disease, and type 2 diabetes.
今回の研究の対象としたのは米カリフォルニア州在住の25~75歳の健康な男女で、3~6カ月ごとに血液や便、皮膚、鼻咽頭(いんとう)の粘液採取の検査を行った
The subjects of this study were healthy men and women aged 25 to 75 living in California, USA, who underwent blood, stool, skin, and nasopharyngeal mucus tests every three to six months.
The subjects of this study were healthy men and women aged 25 to 75 living in California, USA, who underwent blood, stool, skin, and nasopharyngeal mucus tests every three to six months.
40代と60代の老化が進む時期に近付いたら、飲酒量を減らして運動量を増やすなどライフスタイルを変える必要があると研究者はアドバイスしている
Researchers advise that as people approach their 40s and 60s, when ageing becomes more prevalent, they need to make lifestyle changes such as drinking less alcohol and exercising more.
Researchers advise that as people approach their 40s and 60s, when ageing becomes more prevalent, they need to make lifestyle changes such as drinking less alcohol and exercising more.