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Both Beer, Red Wine Raise Blood Pressure

Alcohol Still Heart Healthy in the Right Amount
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April 18, 2005 -- Beer and red wine can raise your blood pressure, but researchers say alcohol is still heart healthy in the right amount.

It's well known that alcohol can raise blood pressure,blood pressure, but it's been unclear if different types of alcohol have the same effect, says Renate R. Zilkens, PhD, research fellow in the School of Medicine and Pharmacology at the University of Western Australia.

Red Wine vs. Beer

Zilkens and colleagues wanted to see if the antioxidant chemicals in red winered wine could offset some of the blood pressure effects of alcohol. So they compared it with beer.

The researchers divided 24 healthy men into four different groups for four weeks:

  • Some men drank no wine or beer and served as a comparison group
  • Some men drank 13 ounces of red wine daily
  • Some men drank 13 ounces of red wine with the alcohol removed to see if the alcohol accounted for any blood pressure effect
  • Some men drank 38 ounces of beer daily (just over three beers)

The men made no other changes in their lifestyle other than limiting tea to less than 2 cups a day (since tea can also raise blood pressure) and avoiding antioxidants (to avoid any potential effect on blood vessels).

The men wore blood pressure and heart rate monitors 24 hours a day.

Blood Pressure, Heart Rate Climb

Compared with the men who did not drink any alcohol, the red wine drinkers had a nearly a 2.5 point jump in their systolic blood pressure. Beer drinkers' blood pressure rose nearly two points.

Systolic blood pressure is the top number of a blood pressure reading. It measures the pressure in blood vessels when the heart pumps.

While this doesn't sound like much, even a few points can make a difference in people who have borderline or high blood pressure. Ideally, blood pressure should be less than 120/80. Blood pressure between 120/80 and 140/90 is called prehypertension.prehypertension.

Heart rate also rose. The researchers tested heart rate during sleep to rule out any effect of activity. Red wine drinkers' heart rate climbed five points for eight to 10 hours after drinking. Beer drinkers' heart rate rose four points.

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