Studie bringt toxische Menschen mit beschleunigter biologischer Alterung in Verbindung

Eine vom U.S. National Institute on Aging finanzierte Studie kommt zu dem Ergebnis, dass der Umgang mit problematischen Personen die biologische Alterung beschleunigt. Jede weitere derartige Person erhöht das biologische Alter um etwa neun Monate und beschleunigt die Alterungsrate um 1,5 Prozent.

Die Studie befragte mehr als 2.000 Menschen zur Präsenz problematischer Personen in ihrem Leben. Anschließend wurde ihr biologisches Alter und ihre Alterungsrate anhand von DNA-Mustern in Speichelproben gemessen. Die Ergebnisse zeigen, dass der Umgang mit Individuen, die Probleme oder Komplikationen verursachen, mit einer schnelleren biologischen Alterung assoziiert ist. Jede zusätzliche Belastung im Leben einer Person fügt ihrem biologischen Alter etwa neun Monate hinzu. Personen mit mehr problematischen Menschen alterten schneller; für jede weitere Person beschleunigte sich ihre Alterungsrate um 1,5 Prozent und ihr biologisches Alter stieg um neun Monate. Das biologische Alter misst die tatsächliche Alterung des Organismus, im Gegensatz zum chronologischen Alter, das die Zeit seit der Geburt zählt. Es ist seit langem bekannt, dass positive Beziehungen kognitivem Verfall vorbeugen und die biologische Alterung verzögern. Die Forscher betonen, wie wichtig es ist, den Kontakt zu Menschen, die hohen Stress und Konflikte erzeugen, zu minimieren.

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Lab scene with dark chocolate, blood vial, and graph linking theobromine to slower biological aging.
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Dark chocolate compound theobromine linked with slower biological aging

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Researchers at King's College London have identified theobromine, a cocoa-derived compound, as being associated with slower biological aging. In a study published on December 10, 2025, in the journal Aging, higher blood levels of theobromine were linked to younger biological ages in participants from two European cohorts. Scientists say the findings are promising but caution that they do not justify eating more dark chocolate without further research.

New research from New York University indicates that anxiety about growing older, particularly concerns over health decline, correlates with accelerated cellular aging in women. The study, involving 726 participants, used epigenetic clocks to measure biological aging rates. Fears related to appearance or fertility showed no similar connection.

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A new study in BMJ Mental Health suggests that drinking up to four cups of coffee a day is associated with slower biological aging in people with severe mental disorders, reflected in longer telomeres—chromosome caps linked to cellular aging. The observed difference in telomere length corresponds to roughly five extra years of biological youth compared with non-coffee drinkers, while higher intake shows no such benefit and may contribute to cellular stress.

A new study reveals that after a stroke, the undamaged side of the brain can appear biologically younger as it compensates for lost function. Researchers analyzed MRI scans from over 500 stroke survivors worldwide using AI models. The findings suggest neuroplasticity helps explain persistent motor impairments.

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A large-scale international study has found that age-related memory decline stems from broad structural changes across the brain, rather than a single region or gene. Analyzing over 10,000 MRI scans from thousands of healthy adults, researchers observed that brain shrinkage's impact on memory intensifies nonlinearly in later life. The findings highlight a distributed vulnerability that accelerates memory loss once a tipping point is reached.

Older adults with weaker or more irregular daily rest-activity rhythms were more likely to be diagnosed with dementia over about three years, according to a study published in *Neurology*. The research also linked later-afternoon activity peaks to higher dementia risk, though it did not establish that disrupted circadian rhythms cause dementia.

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A decades-long UK cohort study following 10,930 people born in 1970 found that children who showed more attention-deficit/hyperactivity disorder (ADHD) traits at age 10 had higher odds of multiple self-reported physical health conditions and physical health–related disability by age 46. The research, published in JAMA Network Open, suggests smoking, psychological distress and higher body mass index partly help explain the link, and highlights the need for better identification and support across adulthood.

 

 

 

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