Study: Potatoes Lower Blood Pressure in People with Obesity and Hypertension Without Increasing Weight

02 Feb 2012 --- Average diastolic blood pressure dropped by 4.3 percent and systolic pressure decreased by 3.5 percent. The majority of subjects took anti-hypertensive drugs and still had a reduction in blood pressure. None of the study participants gained weight.

Feb 2 2012 --- The first study to check the effects of eating potatoes on blood pressure in humans has concluded that two small helpings of purple potatoes (Purple Majesty) a day decreases blood pressure by about 4 percent without causing weight gain. In a report in the ACS' Journal of Agricultural and Food Chemistry, the researchers say that decrease, although seemingly small, is sufficient to potentially reduce the risk of several forms of heart disease.

Joe Vinson and colleagues point out that people in the U.S. eat more potatoes than any other vegetable. Purple-skinned potatoes, a boutique variety increasingly available in food stores, are noted for having high levels of healthful antioxidant compounds. And in Korea, purple potatoes are renowned in folk medicine as a way to lose weight. Vinson's team thus decided to investigate the effects of eating 6-8 small microwaved purple potatoes twice a day on 18 volunteers, most of whom were overweight with high blood pressure. The volunteers ate potatoes or no potatoes for four weeks, and then switched to the opposite regimen for another four weeks while researchers monitored systolic and diastolic blood pressure (the higher and lower numbers in a blood pressure reading like 120/80), body weight and other health indicators.

Average diastolic blood pressure dropped by 4.3 percent and systolic pressure decreased by 3.5 percent. The majority of subjects took anti-hypertensive drugs and still had a reduction in blood pressure. None of the study participants gained weight. Vinson said that other studies have identified substances in potatoes with effects in the body similar to those of the well-known ACE-inhibitor medications, a mainstay for treating high blood pressure. But he suspects that the effects may be due to other substances in potatoes. The scientists do not know yet whether ordinary white potatoes have the same beneficial effects.

Source: Journal of Agricultural and Food Chemistry

Related Articles

Nutrition & Health News

Diets rich in fish and vegetable oils could reduce epileptic seizures

18 Aug 2017 --- For the first time, production of estrogen in the brain has been directly linked to a study to the presence of docosahexaenoic acid (DHA). The findings of a Hiroshima University study could have implications for treating seizures, as it links DHA directly to a reduction in epileptic seizures.

Nutrition & Health News

Kyowa Hakko’s citicoline supplementation may slow glaucoma

18 Aug 2017 --- A 500mg dose of citicoline from Kyowa Hakko Europe (Kyowa) may significantly slow the progression of visual acuity loss due to glaucoma. This is according to a new study by researchers at the Sao Paolo Hospital Eye Clinic at the University of Milan, who followed 41 patients with progressing glaucoma – a disease that damages the optic nerve and can lead to vision problems and blindness – over two years.

Business News

DuPont expands US probiotics pilot facility to improve NPD, delivery times

18 Aug 2017 --- DuPont Nutrition & Health (DuPont) has announced a “substantial upgrade” to its probiotics pilot facility in Madison, Wisconsin, US. The new enhancements will increase its capability for rapidly developing and commercializing new probiotics with decreased time to market. The US$10 million investment allows for increased pace of new product development and significantly improved delivery times on pilot material for clinical trials and customer evaluations, according to DuPont.

Regulatory News

Cutting calories now “critical” to UK childhood obesity strategy

18 Aug 2017 --- The health agency Public Health England (PHE) has shifted its focus away from solely targeting sugar to cutting excess calorie consumption from all sources in its anti-obesity strategy for children in the UK. “A third of children leave primary school overweight or obese and an excess of calories – not just excess sugar consumption – is the root cause of this,” says Duncan Selbie, Chief Executive of PHE. “We will work with the food companies and retailers to tackle this as the next critical step in combating our childhood obesity problem.”

Nutrition & Health News

Walnuts activate brain area that controls appetite, finds study

17 Aug 2017 --- Consuming walnuts activates an area in the brain associated with regulating hunger and cravings. This is according to a first-of-its-kind new brain imaging study by researchers at Beth Israel Deaconess Medical Center (BIDMC), the findings of which, published online in the journal Diabetes, Obesity and Metabolism, reveal for the first time the neurocognitive impact the nuts have on the brain. 

More Articles
URL : http://www.nutritioninsight.com:80/news/Study-Potatoes-Lower-Blood-Pressure-in-People-with-Obesity-and-Hypertension-Without-Increasing-Weight.html