Parece que puede hacer un riesgo con los edulcorantes artificiales(stevia quiza se salva?), aunque todavia no esta confirmado:
The new study involved data on 2,888 adults older than 45 and 1,484 adults older than 60 from the town of Framingham, Massachusetts. The data came from the Framingham Heart Study, a project of the National Heart, Lung, and Blood Institute and Boston University.
"The sample sizes are different because we studied people of different ages," Pase said. "Dementia is rare in people under the age of 60 and so we focused only on those aged over 60 years for dementia. Similarly, stroke is rare in people aged under 45 and so we focused on people older than age 45 for stroke."
The researchers analyzed how many sugary beverages and artificially sweetened soft drinks each person in the two different age groups drank, at different time points, between 1991 and 2001. Then, they compared that with how many people suffered stroke or dementia over the next 10 years.
Compared to never drinking artificially sweetened soft drinks, those who drank one a day were almost three times as likely to have an ischemic stroke, caused by blocked blood vessels, the researchers found.
They also found that those who drank one a day were nearly three times as likely to be diagnosed with dementia.
Those who drank one to six artificially sweetened beverages a week were 2.6 times as likely to experience an ischemic stroke but were no more likely to develop dementia, Pase said.
"So, it was not surprising to see that diet soda intake was associated with stroke and dementia. I was surprised that sugary beverage intake was not associated with either the risks of stroke or dementia because sugary beverages are known to be unhealthy," Pase said.
In response, Lauren Kane, a spokeswoman for the American Beverage Association, issued a statement from the group that said low-calorie sweeteners found in beverages have been proven safe by worldwide government safety authorities.
"The FDA, World Health Organization, European Food Safety Authority and others have extensively reviewed low-calorie sweeteners and have all reached the same conclusion -- they are safe for consumption," the statement said.
"While we respect the mission of these organizations to help prevent conditions like stroke and dementia, the authors of this study acknowledge that their conclusions do not -- and cannot -- prove cause and effect. And according to the National Institutes of Health (NIH), many risk factors can increase an individual's likelihood of developing stroke and dementia including age, hypertension, diabetes and genetics. NIH does not mention zero calorie sweeteners as a risk factor," the statement said. "America's beverage companies support and encourage balanced lifestyles by providing people with a range of beverage choices — with and without calories and sugar — so they can choose the beverage that is right for them."
Separate previous studies have shown an association between the intake of sugar-sweetened beverages and adverse health effects, such as type 2 diabetes, obesity, heart disease, stroke, and possibly even heart failure.
"This article provides further evidence though on artificially sweetened beverages and their possible effects on vascular health, including stroke and dementia," said Dr. Ralph Sacco, professor and chair of neurology at the University of Miami Miller School of Medicine, about the new study.
"We believe the pathways of which artificially sweetened beverages would affect the brain are probably through vascular mechanisms," Sacco said.
"When the authors controlled for hypertension and diabetes and obesity the effects diminish, which implies that some of the effects of artificially sweetened beverages could still be going through a vascular pathway," he said about the new study. "Many strokes are caused by hardening of arteries; and the risk of dementia is also increased by the hardening of arteries in large and small vessels. So, I believe the mechanisms may be through vascular disease, though we can't prove it."
Fuente: http://edition.cnn.com/2017/04/20/healt ... tia-study/