老龄化

A large study of nearly 2 million older adults has found that cerebral amyloid angiopathy, a condition where amyloid proteins build up in brain blood vessels, sharply increases the risk of dementia. Within five years of diagnosis, people with this disorder were four times more likely to develop dementia than those without it, even absent a history of stroke. The findings, drawn from Medicare records, underscore the need for early cognitive screening in affected individuals.

February 01, 2026 由 AI 报道

广岛县81岁的农民里川武行和77岁的妻子正子于2024年因年龄渐长和成本不断攀升，停止了家族稻田的水稻种植。今秋是他们首次从其他种植户购买大米。农业合作社的一名成员表示，虽然培养后继者至关重要，但许多农民忙于勉强维持生计而无暇顾及。

A new study finds that people over 80 who maintain sharp mental abilities, known as super agers, carry fewer copies of the main Alzheimer's risk gene and more of a protective variant. This genetic profile sets them apart even from other healthy seniors in the same age group. The research, led by Vanderbilt University Medical Center, highlights potential resilience factors against dementia.

January 21, 2026 由 AI 报道 事实核查

Stanford Medicine researchers report that blocking the enzyme 15-PGDH reversed age-related cartilage loss in older mice and reduced osteoarthritis-like damage after ACL-like knee injuries. In lab experiments, cartilage taken from knee replacement surgeries also showed early signs of regeneration after exposure to the inhibitor, findings published in *Science*.

An international meta-analysis with nearly 24,000 elderly reveals that emotional support reduces depressive symptoms in old age more than practical daily help. The research, published in the American Journal of Epidemiology, analyzed data from 11 studies in various countries, including Brazil. Experts emphasize the importance of affective bonds for elderly mental health.

January 10, 2026 由 AI 报道

As the population ages, more people are affected by memory diseases like Alzheimer's. However, research in the field is progressing slowly, and only about half of those affected receive the available treatment.