Navigation Links
Smoking, Drinking, Cholesterol May Be Alzheimer's Risk Factors
Date:4/16/2008

Behaviors in midlife can have an impact decades later, studies suggest

WEDNESDAY, April 16 (HealthDay News) -- Heavy drinking, heavy smoking and high cholesterol levels in midlife are associated with the onset of Alzheimer's disease in later years, news research shows.

The apparent link between behavior in the 40s and the development of dementia decades later come from two reports presented Wednesday at the American Academy of Neurology annual meeting, in Chicago.

A study of 938 people 60 and older diagnosed with possible or probable Alzheimer's found an earlier onset for the disease for heavy drinkers (more than two drinks a day) and heavy smokers (a pack of cigarettes or more a day), said Dr. Ranjan Duara, director of the Mount Sinai Medical Center Wien Center for Alzheimer's Disease in Miami Beach, Fla.

"The current thinking is that the pathology of Alzheimer's disease builds up over many years before clinical symptoms are manifest," Duara said. "People who start with a good cognitive reserve, who remain active mentally, are able to compensate for the pathology of the brain for a much longer period of time."

The 20 percent of the people in the study defined as heavy smokers developed Alzheimer's 2.3 years sooner than those who were not heavy smokers. Heavy drinkers developed Alzheimer's 4.8 years earlier.

Both smoking and drinking can have a direct physical effect on the brain, damaging cells and synapses, which are the connections between cells, Duara said. While any amount of smoking is bad -- increasing the risk of heart attack, stroke and other medical problems -- there is "a bit of controversy" about heavy drinking and Alzheimer's, he said, specifically, about exactly what "heavy" means.

Studies have shown that moderate drinking can have a beneficial health effect, reducing the risk of coronary disease, Duare said. One influential study, done in the Netherlands, defined moderate drinking as three or four drinks a day. "They consider more than four drinks a day to be severe," he said of the Amsterdam researchers.

Despite those findings, "I suggest that more than two drinks a day is probably not a good idea," Duara said. "No one has shown that one or two a day is not as good as three or four a day in protecting" general health.

It's hard to tell why high blood cholesterol in the 40s should predict Alzheimer's disease in the 70s, but a study of 9,752 California men and women detected the link, said Rachel Whitmer, a research scientist with the Kaiser Permanente division of research in Oakland.

The study found people with total cholesterol levels between 249 and 500 milligrams were one-and-a-half times more likely to develop Alzheimer's disease than those with cholesterol levels less than 198 milligrams. People with total cholesterol levels of 221 to 248 milligrams were more than one-and-a-quarter times more likely to develop the disease.

"We definitely cannot say that this is cause and effect," Whitmer said. "But we know that total cholesterol levels in midlife are predictive of Alzheimer's disease later in life. We can only say that it is a risk factor."

It's not possible to conclude from the study that LDL cholesterol, the "bad" kind that clogs arteries, is responsible for the relationship, she said. In the 1960s and 1970s, when data on the participants were gathered, no distinction had been made between LDL cholesterol and HDL cholesterol, the "good" kind that helps keep arteries open.

"Future studies need to look at that question," Whitmer said.

Meanwhile, "people need to be thinking about their risk factors for Alzheimer's disease even in their 40s," she said. "What is good for your heart is also good for your brain."

More information

You can learn what is known about risk factors for Alzheimer's disease from the Alzheimer's Association.



SOURCES: Ranjan Duara, M.D., director, Wien Center for Alzheimer's Disease, Mount Sinai Medical Center, Miami Beach, Fla.; Rachel Whitmer, Ph.D., research scientist, Kaiser Permanente division of research, Oakland, Calif.; April 16, 2008, presentations, American Academy of Neurology annual meeting, Chicago


'/>"/>
Copyright©2008 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Ovarian cancer risk not affected by alcohol and smoking, but reduced by caffeine
2. Smokers Remain Unaware of the Health Effects of Smoking, New Survey Finds
3. New Report: Increasing Marylands Cigarette Tax Will Reduce Smoking, Save Lives and Save Money
4. New IOF Report Shows Smoking, Alcohol, Being Underweight and Poor Nutrition Harm Our Bones
5. New Report: Increasing Oregons Cigarette Tax Will Reduce Smoking, Save Lives and Save Money
6. Heavy drinking, conduct disorder linked to high-risk sexual behavior
7. Caffeine May Block High Cholesterol Linked to Alzheimers
8. Cholesterol, blood pressure control may reverse atherosclerosis in adults with diabetes
9. Aggressive Cholesterol, Blood Pressure Treatment Shows Some Benefit
10. Pieces coming together in Parkinsons, cholesterol puzzle
11. Cholesterol Drug Controversy Continues
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Smoking, Drinking, Cholesterol May Be Alzheimer's Risk Factors
(Date:5/26/2016)... ... May 26, 2016 , ... The Woodlands at ... offering a new model of care for living and healing, celebrated its grand opening, ... Life in a Real Home provided by Empowered Staff. , “This is an incredibly ...
(Date:5/26/2016)... Warner, New Hampshire (PRWEB) , ... May 26, 2016 , ... ... of which are designed, engineered, and manufactured in Warner, New Hampshire at the MadgeTech ... known to provide reliable monitoring solutions trusted by government agencies, including NASA. , ...
(Date:5/26/2016)... SURPRISE, ARIZ. (PRWEB) , ... May 26, 2016 , ... ... worry of American families. , The 550 employees of Sun Health Senior Living ... plan through Aetna that reduces their doctor and prescription copays for the year, while ...
(Date:5/26/2016)... ... May 26, 2016 , ... Leadership of Life Science Logistics ... organization has earned its ISO 13485 certification, indicating the company’s quality control system ... and policies associated with ISO quality standard 13485. , BSI Group America, ...
(Date:5/26/2016)... ... May 26, 2016 , ... North Cypress Medical Center hosted ... Club in Cypress. With the help of community partners, the event organizers raised $45,000 ... hope for wounded service members and their families through health, wellness, and therapeutic support. ...
Breaking Medicine News(10 mins):
(Date:5/24/2016)... May 24, 2016   ... beide primären Endpunkte und demonstriert Ebenbürtigkeit ... ‚ausgezeichneter plus guter , ... ,      (Logo: http://photos.prnewswire.com/prnh/20130829/633895-a ... neue positive Daten von der MORA-Studie der Phase ...
(Date:5/24/2016)... New Zealand , May 24, 2016 ... and informatics solutions for the healthcare sector, has been named ... New Zealand Hi-Tech Awards 2016. Dr Bruce ... fantastic acknowledgement for our team.  It,s really good to be ... burden healthcare internationally. Our products are used in 35 countries ...
(Date:5/24/2016)... VMS BioMarketing as senior vice president of sales, announced Andrea Heslin Smiley , ... the company,s business development and sales team, exploring new opportunities for VMS to empower ... ... ... ...
Breaking Medicine Technology: