( uggest that there is more to treating b...)Some High Blood Pressure Drugs may Help Reduce Dementia Risk,Health

uggest that there is more to treating blood pressure than achieving a goal of 140/80," said Sink. "Which drug you choose for blood pressure control can have broader implications. We know that ACE inhibitors protect against heart failure and kidney failure, and now there is evidence that some of them may also protect against dementia."

Sink said the effects may be related to reducing inflammation in the brain.

"The hypothesis for how they may slow cognitive decline is that they are decreasing inflammation in the brain, and we know that inflammation is important in the development of Alzheimer's disease," she said.

The researchers analyzed data from the Cardiovascular Health Study, a long-term study of cardiovascular risk factors that involved 5,888 people over 65 years old from Forsyth County in North Carolina, Sacramento County, Calif., Pittsburgh, Pa., and Washington County, Md. The mean age of participants was 75 years old and most participants (64 percent) were women.

They specifically looked at 1,074 study participants who were free of dementia when they entered the study and who were being treated for high blood pressure. They evaluated whether exposure to ACE inhibitors in general and to the centrally active versus non-centrally active drugs was related to dementia and cognitive decline.

Compared to other anti-hypertensive drugs, there was no association between exposure to ACE inhibitors as a class and the risk of dementia. The benefits clearly came from taking the centrally active drugs.

"We need to confirm the results in a study in which people are randomly selected to receive either ACE inhibitors that are centrally active or those that aren't," said Sink. "Hypertension is a risk factor for dementia, so it's important to know if the type of drug pressure medication a person takes can cut that risk."


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