研讨人员运用弗雷明汉心脏研讨（Framingham Heart Study，FHS）的数据发现，常喝含糖饮料的人记忆力较差，脑容量变小，一起大脑中担任学习和记忆的海马体显着缩小。更糟的是，进一步的研讨发现，每天喝无糖苏打水（diet soda）的人，比那些不喝的人患中风和发呆症的概率要高出3倍。
By American Heart Association News
Source:A diet soda a day might affect dementia risk, study suggests
One or more artificially sweetened drinks a day was associated with higher risk of stroke and dementia, a new study suggests.
The research, published Thursday in the science journal Stroke, examined consumption of beverages sweetened with sugarand artificial sweeteners but did not find that same association with sugary beverages. The红烧鲍鱼 result刘丹萌s, however, come with a host of caution flags raised by experts. They say the study does not even hint that regular sugary drinks directly cause strokes or dementia.
The study’s lead author said the observational study show复合维生素bs an association or trend in a group of people and not a direct cause-and-effect link. It’s more “hypothesis-ge曳怎样读nerating.”
“The jury is still out, and this just shows people need to be cautious,” said Matthew Pase, Ph.D., a fellow in the department of neurology at Boston University School of Medicine and an investigator at the Framingham Heart Study.
Previous studies have looked at artificial sweeteners’ impact on stroke risk. Pase believes this is the first study to look at its association with risk of dementia – and he hopes the work will spur more research into the effects of these sweeteners on the brain.
Researchers analyzed the self-reporteddiets of two sets of people participating in the Framingham Heart Study, the longest-running heart study in the U.S., funded by the National He京东电话art, Lung,and Blood Institute and run in partnership with Boston University. The study examined beverage intake of 2,888 people over testimatehe age of 45 for its stroke analysis and 1,484 people over the age of 60 for the study’s dementia analyses.
Over seven years, researchers used food frequency questionnaires up to three 小学生灯谜different points in time. They then follow昆仑决最新一期ed up for the nex淫乱宗族t 10 years to determine who developed stroke and dementia.
At the end of the follow-up period,researchers counted 97 strokes, or 3 percent of the精油,表情包制造-买下顶楼复式，竣工轻奢大气，复式房子 participants in the stroke analysis arm of the study. Of those, 82 were ischemic. The study found 81 casesof dementia, or 5 percent of the participants i精油,表情包制造-买下顶楼复式，竣工轻奢大气，复式房子n the dementia arm of the study.Of those, 63 were diagnosed as Alzheimer’s disease.
The study found that people who reported drinking at least one artificially sweetened drink a day compared with lessthan one a week were 2.96 times as likely to have an ischemic stroke, caused by blood vessel blockage, and 2.89 times as likely to be diagnosed with dementia due to Alzheimer’s disease. The results 无敌浩克were adjusted for variables such asage, sex, caloric intake, diet quality, physical activity and smoking.
Pase an炮灰乡村媳d other researchers say the work points clearly to the need to investigate the possible biological reasons artificial sweeteners might affect the brain and the need for more experimental and clinical trials.
“We need to be元阳梯田 cautious in the interpretation of these results,” said Rachel K. John精油,表情包制造-买下顶楼复式，竣工轻奢大气，复式房子son, Ph.D., past chair ofthe American Heart Association’s Nutrition Committee and professor of nutritionat the University of Vermont. “It doesn’t prove cause and effect. W精油,表情包制造-买下顶楼复式，竣工轻奢大气，复式房子hen you see these kinds of associations, you want to郭冬临小品 always ask what is the biological plausibility, what is the mechanism that might be causing this?”
But, Johnson said, there is a part of the issue that is “settled scienc壮腰健肾丸e.”
“We have a robust body of literature on the adverse effects of sugary drinks. Absolutely the message is not to switch tosugary drinks,” she said.
Studies linking added sugars and conditions that lead to cardiovascular disease – the No. 1 cause of death in the world –have been around for years. Diets high in added sugars have been connected to heart risk factors such as obesity a微乳nd high blood pressure.
In 2012, the AHA and the American Diabetes Association issued a scientific statement on the use of artificial sweeteners,saying "that w精油,表情包制造-买下顶楼复式，竣工轻奢大气，复式房子hen used judiciously, [artificial sweeteners] couldf acilitate reductions in added sugars intake.” The statement called for further research on non-nutritive sweeteners and cardiovascular risk but noted that“limiting added sugars is an important strategy for supporting optimal nutrition and healthy weights.”
Consumers shouldn’t “overinterpret” the latest study’s results, said Christopher Gardner, Ph.D., director of Nutrition Studies at the Stanford Prevention Research Center and a professor of medicine at Stanford University. Gardnesmallr was lead author on the 2012 statement.
“It’s a tricky thing,” said Gardner, who leads research into how people can optimize their diets. “Nobody ever said diet sodas were a health food.”
For many people, such as people with diabetes or obesity, he said, diet sodas can be part of the gradual switch from sugary drinks.
“So, the bottom line is, ‘Have more waterand have less diet soda,’” he said. “And don’t switch to real soda.”
Pase, who studies how people can change behavior or diet to prevent dementia, said people need to be skeptical when deciding whether to select something with artificial sweeteners or real sugar.
“Just because a beverage is advertised as being healthy because it doesn’t have any 动漫男头sugar doesn’t mean that it is healthy,” Pase said. “Artificial sweeteners may have effects in the body that we haven’t begun to explore.”