As the largest resource of information specific to women's brain health, we are sure you will find what you are looking for, and promise that you will discover new information.
Published on: August 14, 2012
by Susan London for Clinical Psychiatry News:
Long-term coffee consumption may protect against dementia in the elderly, according to an Italian study presented at the Alzheimer’s Association International Conference 2012.
In the prospective population-based cohort study of adults aged 80 years or older, about three-fourths drank coffee, having started on average at the age of 19 years.
Among those who were dementia-free at baseline, coffee drinkers were 32% less likely to develop dementia over the next 5½ years, compared with their counterparts who had never consumed the beverage, reported lead investigator Ugo Lucca, M.Sc., head of the laboratory of geriatric neuropsychiatry at the Mario Negri Institute for Pharmacological Research in Milan.
“Recent findings have suggested that coffee consumption may have neuroprotective effects,” he noted. “Long-term caffeine consumption could, in fact, reduce amyloid beta production and aggregation through suppression of both beta- and gamma-secretase activities.”
“What about reverse causality, with dementia causing a decrease in coffee consumption?” one attendee asked.
Mr. Lucca acknowledged that coffee consumption did indeed fall with increasing severity of dementia at baseline, but he also noted that 41% of participants with severe dementia still drank at least some. “The only explanation could be that, even in this population, drinking coffee is protective for survival,” he said. “In a subpopulation of those with dementia, probably drinking coffee is not protective for survival.”
The investigators studied 2,198 participants in the Monzino 80-Plus Study, conducted in the Varese province of Italy. Participants or relatives reported the number of cups of coffee consumed daily, in the past and at present.
Study participants were 90 years old and had 5 years of education, on average, and 73% were women. Their mean Mini-Mental State Examination score was 20.5.
Overall, about three-fourths of participants reported drinking coffee, with about one-third drinking two or more cups daily.
“Though the average daily coffee intake tends to decrease from midlife, coffee consumption remains common in the very old,” Mr. Lucca observed. The average intake was 2.3 cups daily at the age of 50 years, but still 1.5 cups daily at the age of 87 years.
In the cross-sectional part of the study, the prevalence of dementia was about 51% among participants who drank less than one cup of coffee daily, 34% among those drinking one cup daily, and 23% among those drinking two or more cups daily, he reported.
In a multivariate analysis, participants who drank coffee were 29% less likely to have dementia (odds ratio, 0.71; P = .008).
In the longitudinal part of the study, the incidence of dementia over 5.5 years among the 1,097 participants who were free of dementia at baseline was significantly lower for coffee drinkers than for never-drinkers (P less than .0001), with a widening gap over time.
The incidence was 45% among participants drinking less than one cup of coffee daily, 31% among those drinking one cup daily, and 29% among those drinking two or more cups daily, Mr. Lucca reported.
In a multivariate analysis, compared with never-drinkers, coffee drinkers as a whole were about one-third less likely to develop dementia (hazard ratio [HR], 0.68; P = .006). The benefit was similar whether they consumed one cup daily (HR, 0.68; P = .01) or two or more cups daily (HR, 0.66; P = .02).
Mr. Lucca disclosed no conflicts of interest related to the research.
Recent findings suggested the serotonin system may be an effective target for prevention and treatment of mild cognitive impairment. “Now that we have more evidence that serotonin is a chemical that appears affected early in...
By the time you start losing your memory, it’s almost too late. That’s because the damage to your brain associated with Alzheimer’s disease (AD) may already have been going on for as long as twenty years....
For decades, the only way to officially diagnose Alzheimer’s disease was by analysing a patient’s brain during a postmortem. More recently, physicians have been able to use positron emission tomography scans of the brains of living people...
The material presented through the Think Tank feature on this website is in no way intended to replace professional medical care or attention by a qualified practitioner. WBHI strongly advises all questioners and viewers using this feature with health problems to consult a qualified physician, especially before starting any treatment. The materials provided on this website cannot and should not be used as a basis for diagnosis or choice of treatment. The materials are not exhaustive and cannot always respect all the most recent research in all areas of medicine.