Risk for Parkinson’s Disease Falls After a Heart Attack

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News Picture: Risk for Parkinson's Disease Falls After a Heart Attack

FRIDAY, Feb. 18, 2022 (HealthDay Information)

A brand new examine hints that heart attack survivors might have an uncommon benefit over different individuals: a barely decrease threat of creating Parkinson’s illness.

Researchers discovered that in contrast with related individuals who had by no means suffered a heart assault, survivors have been 20% much less prone to be recognized with Parkinson’s over the following 20 years.

The large caveat: The findings don’t show a real “protecting” impact. And even when that have been the case, nobody would advocate letting your heart well being go to keep at bay Parkinson’s.

“That is an epidemiology examine, and it may possibly’t show trigger and impact,” stated James Beck, chief scientific officer for the nonprofit Parkinson’s Basis.

There may very well be varied causes that heart attack was linked to a decrease threat of Parkinson’s, in keeping with Beck, who was not concerned within the examine.

Plus, he famous, the danger discount was fairly small.

The findings — revealed Feb. 16 within the Journal of the American Heart Association — do add to proof that sure threat components for heart disease, together with smoking and high cholesterol, are paradoxically tied to a decrease threat of Parkinson’s.

Parkinson’s disease impacts almost 1 million individuals in america, in keeping with the Parkinson’s Basis.

It’s a mind illness that over time, destroys or disables cells that produce dopamine, a chemical that helps regulate motion and emotional responses.

Essentially the most seen signs of Parkinson’s are movement-related — tremors, stiff limbs and coordination issues — however the results are wide-ranging and embrace depression, irritability and bother with reminiscence and pondering expertise.

“We nonetheless do not know the reason for PD, why it progresses, or methods to cease it,” Beck stated.

There are, nonetheless, some recognized threat components for the illness. Older age is one, as are sure environmental components — together with a historical past of head trauma and job exposures to pesticides or heavy metals.

“However most individuals with these exposures don’t develop Parkinson’s,” Beck identified.

On the whole, he stated, researchers suspect the illness arises from a fancy interplay between genetic susceptibility and environmental components.

As for protecting components, some analysis means that common exercise and a wholesome diet — like the standard Mediterranean diet — could also be related to a decrease Parkinson’s threat.

Then there are the research with extra puzzling outcomes: Some have linked sure threat components for heart disease and strokesmoking, high cholesterol and diabetes — to decrease odds of creating Parkinson’s.

It is potential that these findings assist clarify the present ones, in keeping with lead researcher Dr. Jens Sundbøll of Aarhus College Hospital in Denmark.

His crew used a Danish nationwide registry to establish almost 182,000 individuals who suffered a first-time coronary heart assault between 1995 and 2016. They in contrast these sufferers with greater than 900,000 people matched for age and intercourse, however with no historical past of coronary heart assault.

Over the 21-year examine interval, 0.9% of coronary heart assault survivors developed Parkinson’s illness. One other 0.1% have been recognized with secondary parkinsonism — the place Parkinson-like signs come up as a result of different causes, reminiscent of sure medicines.


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After the researchers weighed different components, together with varied medical situations, they discovered that coronary heart assault survivors have been 20% much less prone to develop Parkinson’s than the comparability group.

Equally, the survivors had a 28% decrease threat of secondary parkinsonism.

Going into the examine, the researchers have been not sure what they’d discover. In previous analysis, Sundbøll stated in a journal information launch, coronary heart assault survivors confirmed an elevated threat of sure different mind problems — together with stroke and a type of dementia attributable to impaired blood movement to the mind.

The present findings, he stated, recommend that Parkinson’s threat is “at the very least not elevated” following a coronary heart assault.

Beck stated the relationship between heart health and Parkinson’s “stays unresolved.”

Whereas some research trace at safety from issues like smoking or excessive cholesterol, he stated, they go away open the “chicken-and-egg query.”

Parkinson’s illness, Beck defined, has an extended “prodromal” section — a interval through which individuals might have sure signs of the illness, but it surely has not but absolutely manifested.

And there’s proof, for instance, that cholesterol levels might decline throughout that early section. That might make it seem like greater cholesterol is protecting in opposition to Parkinson’s.

Equally, Beck stated, the connection between smoking and decrease Parkinson’s threat might not mirror an impact of smoking: One idea is that, presumably because of the lack of dopamine, individuals within the early levels of Parkinson’s are much less vulnerable to addiction.

“There could also be different issues happening right here that we do not but perceive,” Beck stated. “The underside line is, the mind is extremely complicated.”

Extra info

The Parkinson’s Basis has an outline on Parkinson’s disease.

SOURCES: James Beck, PhD, senior vp and chief scientific officer, Parkinson’s Basis, New York Metropolis; Journal of the American Coronary heart Affiliation, on-line examine and information launch, Feb. 16, 2022

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