The Navigator - Navigenics Blog

Genetic insights into health and wellness

All results for "Atrial fibrillation" (2)

January 02, 2009

Chablis, or not chablis? That is the question

Michael Nierenberg, M.D.,

Navigenics Medical Director

Posted 11:57 AM PDT

imageFrom the way some people talk about alcohol, you might think it’s almost a cure-all, capable of preventing heart attacks and strokes while reducing the risk of Alzheimer’s disease, diabetes and macular degeneration.

Others, however, will tell you alcohol is bad for your body and brain, causing addiction, cirrhosis of the liver and abnormal heart rhythms while raising the risk of breast cancer.

So who is right? Well, both sides, actually.

A growing body of research suggests that, when consumed in moderation, alcohol can have many significant health benefits.

The evidence purporting that alcohol may be associated with a reduction in heart disease – or at least a reduction in deaths from heart disease – has garnered the most attention.

One recent study of former teetotalers found that those who took up drinking wine in middle age experienced a 38 percent reduction in heart attacks and stroke over four years.

“The findings suggest that, for carefully selected individuals, a ‘heart healthy diet’ may include limited alcohol consumption, even among individuals who have not included alcohol previously,” the study’s authors wrote.

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Categories: Alzheimer's disease, Atrial fibrillation, Diabetes, Heart attack, Macular degeneration

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November 13, 2008

Exercise helps keeps the heart on beat

Michael Nierenberg, M.D.,

Navigenics Medical Director

Posted 03:30 PM PDT

imageIf you’ve been looking for excuses to skip exercise, a predisposition to atrial fibrillation shouldn’t be one of them.

For years, the prevailing wisdom has been that exercise – at least vigorous endurance training – increases a person’s risk of atrial fibrillation, an irregular heart beat linked to the formation of blood clots that can potentially cause a stroke.

By extension, many people feared the same might be true even for leisurely physical activity.

But new research has determined that being inactive may be just as bad. Scientists recently found that light to moderate exercise appears to actually prevent this health condition from occurring in older adults.

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Categories: Exercise, Healthy weight, Atrial fibrillation

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