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Title: Yogurt Consumption, Blood Pressure, and Incident Hypertension
Source: [None]
URL Source: http://www.sciencedaily.com/releases/2012/09/120919190600.htm
Published: Sep 19, 2012
Author: staff
Post Date: 2012-09-19 23:10:01 by Tatarewicz
Keywords: None
Views: 70
Comments: 3

ScienceDaily (Sep. 19, 2012) — Adding more yogurt to your diet without increasing the number of calories you eat may help lower your risk of high blood pressure, according to new research presented at the American Heart Association's High Blood Pressure Research 2012 Scientific Sessions.

A recent study found long-term yogurt-eaters were less likely to develop high blood pressure and on average had lower systolic blood pressure than those who didn't eat yogurt. Systolic blood pressure is the top number in a blood pressure reading. It measures the force of blood against the walls of your arteries when your heart is beating.

During the 15 year study, researchers followed more than 2,000 volunteers who did not have high blood pressure at the start of the study. Yogurt consumption was measured by questionnaires filled out by the volunteers at three intervals over the study period. Study participants were 31 percent less likely to develop high blood pressure if at least 2 percent of their daily calories came from yogurt, which would be like eating at least one six-ounce cup of low-fat yogurt every three days. In addition, their systolic blood pressure increased less than that of people who didn't eat yogurt.

The study was funded by the Framingham Heart Study of the National Heart, Lung, and Blood Institute of the National Institutes of Health and by a research grant from the Dannon Company, Inc.

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#1. To: Tatarewicz (#0)

Make sure to read the list of ingredients before purchasing. Many popular brands of yogurt contain high fructose corn syrup.

Buzzard  posted on  2012-09-20   19:53:40 ET  Reply   Trace   Private Reply  

Many popular brands of yogurt contain high fructose corn syrup.

Or questionable sugar substitutes like sucralose.

Tatarewicz  posted on  2012-09-21   4:17:57 ET  Reply   Trace   Private Reply  

Medscape's take on the subject:

DASH recommends two to three servings of fat-free or low-fat milk and milk products per day, four to five servings of fruit a day, and two to three servings of "healthy" fats and oils, "and certainly sesame/rice-bran oil, which contains polyunsaturated fatty acids and is rich in antioxidants, would be classified as a healthy fat," she observes.

Yogurt: Keep It Low in Fat and Sugar

The yogurt research was presented by Dr Huifen Wang (Tufts University, Boston, MA), who together with colleagues examined the effects of consuming low-fat yogurt in just over 2000 adults participating in the Framingham Heart Study Offspring Cohort. Participants, who did not have hypertension at baseline, were said to be "consumers" if they ate one or more servings of yogurt per month, as noted by a food frequency questionnaire. Of those in the study, 44% were yogurt consumers at the beginning, and this increased over the 14 years of follow-up. There were 913 people who developed incident hypertension over the course of the study.

Yogurt can be an effective way to add milk or dairy products to your diet.

Those who ate >2% of total calories from yogurt (the high-intake group, representing one six-ounce cup of low-fat yogurt every three days) had about a 30% lower risk of incident hypertension than nonconsumers (OR 0.69, after adjustment for demographic and lifestyle factors and cholesterol medication use). The high-intake group also had 0.19-mm-Hg smaller annualized elevation of systolic BP than nonconsumers (p=0.04).

Johnson says: "Yogurt can be an effective way to add milk or dairy products to your diet, because many people do not come close to meeting those recommendations for two to three servings per day. The yogurt study reinforces what we already know about the role of dairy products." However, she cautions that care must be taken regarding the amount of sugar in yogurt: "We know that added sugars have the opposite effect on BP, so you need to watch the amount of sugar, and some yogurts are high in sugar."

Cranberry Juice an Option for a Fruit or Vegetable Portion

In a second study, researchers from the US Department of Agriculture, led by Dr Janet A Novotny, gave low-calorie cranberry juice or a color/flavor/calorie-matched placebo beverage to 56 adult volunteers, incorporated into a controlled diet for eight weeks. At the end of the study, when BP values were compared with baseline, cranberry juice was associated with a significant decrease in diastolic BP (p=0.049) and a trend toward decreased systolic BP, while the placebo was associated with no change from baseline.

You can use cranberry juice or cranberries, which are rich in potassium and antioxidants, to meet that recommendation to eat plenty of fruits and vegetables.

Johnson observes that this was "a small study" and some key details are missing, such as the amount of cranberry juice consumed. Nevertheless, "It does show that you can use cranberry juice or cranberries, which are rich in potassium and antioxidants, to meet that recommendation to eat plenty of fruits and vegetables," she says. She notes also that low-calorie cranberry juice was employed in this study, "which I would certainly recommend. Cranberries are quite sour tasting, so they really do need to be sweetened to make them palatable, and full-calorie cranberry juice can be quite high in added sugars."

Blend of Sesame/Rice-Bran Oil Drops BP and Improve Lipids

Finally, Dr Devarajan Sankar (Fukuoka University Hospital, Fukuoka, Japan) and colleagues conducted a prospective, randomized open-label dietary-intervention study in 300 hypertensive patients in New Delhi, India, randomizing them to one of three groups: the calcium-channel blocker (CCB) nifedipine 30 mg/day; 35 g/day of a blend of sesame and rice-bran oil (trademark Vivo); or nifedipine plus sesame-oil blend for 60 days.

The CCB, sesame oil, and combination of the two induced significant falls in systolic BP (-16.2 mm Hg, -14 mm Hg, and -36 mm Hg, respectively) and in diastolic BP (-12 mm Hg, -10.8 mm Hg, and -23.8 mm Hg), respectively, over the course of the study. The combination resulted in such a remarkable drop in BP that the dose of nifedipine had to be reduced. And those using the oil saw a 26% fall in LDL and a 9.5% increase in HDL cholesterol.

"We have demonstrated, for the first time, that dietary interventions with blends of sesame and rice-bran oils lower BP and lipids in hypertensive individuals," say Sankar et al. However, they note that further studies of the oil--which was made specifically for this study and is not marketed commercially--are needed.

www.medscape.com/viewarticle/771268

Tatarewicz  posted on  2012-09-21   4:30:15 ET  Reply   Trace   Private Reply  

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