June 16, 2024

Good News – New Study Finds That the Prevalence of Dementia Is Declining

The findings were recently released in the journal Proceedings of the National Academy of Sciences.
” The factors for the decrease in the prevalence of dementia are not certain, but this trend is excellent news for older Americans and the systems that support them,” said Péter Hudomiet, the studys lead author and an economic expert at RAND, a not-for-profit research company. “This decline may help in reducing the expected strain on households, nursing houses, and other assistance systems as the American population ages.”
Michael D. Hurd and Susann Rohwedder of RAND are co-authors of the study.
The prevalence of dementia was higher amongst women than men over the entire duration, but the distinction diminished between 2000 and 2016. Among guys, the occurrence of dementia decreased by 3.2 percentage points from 10.2% to 7.0%. The decrease was bigger amongst ladies– 3.9 percentage points from 13.6% to 9.7%.
In 2021, about 6.2 million U.S. adults aged 65 or older dealt with dementia. Due to the fact that age is the greatest threat aspect for dementia, it has actually been forecasted that increasing life spans will significantly increase the frequency of Alzheimers illness and related dementias from about 50 million to 150 million worldwide by 2050.
There is growing proof that age-adjusted dementia frequency has been declining in industrialized countries, potentially due to the fact that of increasing levels of education, a decrease in smoking, and better treatment of key cardiovascular threat aspects such as high blood pressure.
Any change in these age-specific rates has essential implications for predicted prevalence and associated expenses, such as payments for nursing care by households, insurer, and the federal government.
The brand-new RAND study uses an unique design to examine cognitive status based upon a broad set of cognitive steps generated from more than 21,000 individuals who participate in the national Health and Retirement Study, a big population-representative survey that has actually been fielded for more than 20 years.
The design increases the accuracy of dementia category by utilizing the longitudinal measurement of the data. Significantly for the research study of inequality, the design is constructed to make sure the dementia category is calibrated within population subgroups and, for that reason, it is equipped to produce accurate quotes of dementia occurrence by age, sex, race, ethnic background and education, and by a procedure of life time profits.
The RAND study found that education was a crucial element that contributed, in an analytical sense, to the reduction in dementia, explaining about 40% of the reduction in dementia prevalence amongst males and 20% of the decrease amongst ladies.
The portion of college-educated men in the research study increased from 21.5% in 2000 to 33.7% in 2016, and the fraction of college-educated ladies increased from 12.3% to 23% over this period.
Patterns in the level of education vary throughout demographic groups, which might affect inequalities in dementia in the future. While ladies typically had lower levels of education than guys, amongst more youthful generations, females are more informed. While ethnic and racial minority groups still have lower education levels than non-Hispanic White people, the gaps throughout racial and ethnic groups have shrunk.
” Closing the education space throughout ethnic and racial groups may be a powerful tool to decrease health inequalities in general and dementia inequalities in specific, an essential public health policy objective,” Hudomiet stated.
The age-adjusted prevalence of dementia tended to be higher amongst racial and ethnic minority individuals, both amongst guys and females. Amongst non-Hispanic White men, the frequency of dementia decreased from 9.3% to 6.6%.
Reference: “Trends in inequalities in the frequency of dementia in the United States” by Péter Hudomiet, Michael D. Hurd and Susann Rohwedder, 7 November 2022, Proceedings of the National Academy of Sciences.DOI: 10.1073/ pnas.2212205119.
The study was funded by the National Institute on Aging..

There are many various types of dementia, including Alzheimers illness, which is the most common cause of dementia.
The prevalence of dementia was higher amongst ladies than males over the entire duration, however the distinction shrank in between 2000 and 2016. Amongst men, the frequency of dementia decreased by 3.2 percentage points from 10.2% to 7.0%. The age-adjusted frequency of dementia tended to be greater amongst ethnic and racial minority people, both among females and males. Amongst non-Hispanic White guys, the frequency of dementia reduced from 9.3% to 6.6%.

Dementia is a term utilized to describe a decrease in cognitive function, including memory, language, and problem-solving abilities. It is frequently connected with old age, but it can occur at any age. There are several kinds of dementia, including Alzheimers disease, which is the most typical cause of dementia.
The study likewise discovered a reduction in variations based upon race and sex.
A recent study carried out by the RAND Corporation discovered that the occurrence of dementia amongst individuals over age 65 in the United States reduced by 3.7 percentage points from 2000 to 2016.
The age-adjusted prevalence of dementia fell from 12.2% of individuals over age 65 in 2000 to 8.5% of people over age 65 in 2016, representing a nearly one-third decrease from the 2000 level. The frequency of dementia reduced regularly over the entire research study period, with a particularly quick decline observed between 2000 and 2004.
Distinctions in the prevalence of dementia between White men and black guys narrowed, with the occurrence of dementia dropping by 7.3 percentage points amongst Black males as compared to 2.7 portion points among white males.