Health
Dementia Research: New study suggests 4 in 10 Americans are at risk of developing dementia after age 55
new cases of dementia The number of deaths in the United States is expected to double over the next 30 years, a new study suggests.
The study was published this week in the journal natural medicinestudied more than 15,000 people and estimated the lifetime risk of dementia from ages 55 to 95.
A team including researchers from Johns Hopkins University, Mayo Clinic, and New York University predicts that the number of new cases of dementia in the United States will double from more than 500,000 in 2020 to about 1 million by 2060. . The authors said this increase is directly related to the aging population. of the US population.
The study also showed that the risk of developing dementia after age 55 was 42%, more than double the risk seen in previous studies. Studies show that lifetime risk increases by more than 50% after age 75.
“Our findings predict that the burden of dementia in the United States will increase dramatically in the coming decades, with one in two Americans expected to experience cognitive impairment after age 55. ,” said study principal investigator, epidemiologist and founder Dr. Joseph Koresh. Director of the Optimal Aging Institute at New York University Langone said: press release.
The study found greater risks were seen in women, black Americans, and people with the APOE4 gene, a gene that primarily increases the risk of Alzheimer's disease.
Researchers also found that while the number of white Americans with dementia is expected to nearly double, the number of black Americans with dementia could triple.
“These results highlight the urgent need for policies that focus on health equity and promote healthy aging,” the authors wrote in their study. “Understanding the lifetime risk of dementia can inform public health planning and improve prevention efforts for patients.”
Dementia is an umbrella term that describes a decline in cognitive abilities, such as memory loss and difficulty concentrating, which can affect a person's daily life and ability to function independently.
There are many diseases such as classified as dementia Alzheimer's disease, Huntington's disease, Lewy body dementia, frontotemporal dementia, vascular dementia, etc.
According to , an estimated 10% of the U.S. population over the age of 65 has dementia. Centers for Disease Control and Prevention.
Aging is a risk factor for dementia, but research shows there are other genetic factors that increase risk, as well as higher rates of diabetes, high blood pressure, obesity, unhealthy diet, lack of exercise, and poor mental health. the authors stated. The study also used a more comprehensive method to identify dementia diagnoses, which may have increased the prediction of new cases.
“The growing population of people living with dementia poses a significant challenge, especially for health policy makers. We must refocus our efforts on strategies that minimize the severity of the disease,” Koresh said. .
ABC News' Dr. Dana Lin contributed to this report.
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