Featured Research

from universities, journals, and other organizations

Gastric bypass reduces blood pressure, Swedish research finds

Date:
September 7, 2011
Source:
University of Gothenburg
Summary:
The kidneys play an important role in the regulation of blood pressure by adjusting the production of urine after eating or drinking. This process begins already in the upper digestive tract, which could explain why gastric bypass surgery for obesity also markedly reduce blood pressure, reveals research from Sweden.

The kidneys play an important role in the regulation of blood pressure by adjusting the production of urine after eating or drinking. This process begins already in the upper digestive tract, which could explain why gastric bypass surgery for obesity also markedly reduce blood pressure, reveals a thesis from the Sahlgrenska Academy at the University of Gothenburg.

Related Articles


The kidneys can quickly adjust the production of urine after consumption of food or drink, which is important so that the composition of bodily fluids and the blood does not vary too much.

"My research shows that this elimination of urine starts already when salt and water reach the upper part of the digestive tract," says researcher Peter Hallersund from the Sahlgrenska Academy. "So there's a link between this part of the body and renal elimination."

The thesis includes a study of 1,750 patients who underwent one of two types of obesity operations -- gastric bypass or gastric banding. The results show that the elimination of urine increases after gastric bypass surgery. This can be explained by the fact that food and drink no longer come into contact with the upper part of the digestive tract, thus breaking the link between this part of the digestive system and the kidneys.

"We saw a long-term reduction in blood pressure after gastric bypass surgery, which could also be directly linked to the increase in patient's daily amount of urine after the operation," says Hallersund. "The gastric bypass probably reduces blood pressure in the same way as diuretic blood pressure medication."

After ten years the decreased blood pressure following a gastric bypass was not related to the reduced weight and was markedly larger than after gastric banding. Dr Hallersund believes that this could be important when deciding between surgical methods for people who are overweight and have high blood pressure.

"A more unexpected finding in this study was that consumption of salty food increased after gastric bypass surgery, even though blood pressure went down. We think that this is because the operation also bypasses a link between the upper digestive tract and the brain which is important for suppressing our appetite for salt."


Story Source:

The above story is based on materials provided by University of Gothenburg. Note: Materials may be edited for content and length.


Journal Reference:

  1. P. Hallersund, A. Elfvin, H. F. Helander, L. Fandriks. The expression of renin-angiotensin system components in the human gastric mucosa. Journal of the Renin-Angiotensin-Aldosterone System, 2011; 12 (1): 54 DOI: 10.1177/1470320310379066

Cite This Page:

University of Gothenburg. "Gastric bypass reduces blood pressure, Swedish research finds." ScienceDaily. ScienceDaily, 7 September 2011. <www.sciencedaily.com/releases/2011/09/110907085354.htm>.
University of Gothenburg. (2011, September 7). Gastric bypass reduces blood pressure, Swedish research finds. ScienceDaily. Retrieved March 29, 2015 from www.sciencedaily.com/releases/2011/09/110907085354.htm
University of Gothenburg. "Gastric bypass reduces blood pressure, Swedish research finds." ScienceDaily. www.sciencedaily.com/releases/2011/09/110907085354.htm (accessed March 29, 2015).

Share This


More From ScienceDaily



More Health & Medicine News

Sunday, March 29, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

S. Leone in New Anti-Ebola Lockdown

S. Leone in New Anti-Ebola Lockdown

AFP (Mar. 28, 2015) Sierra Leone imposed a three-day nationwide lockdown Friday for the second time in six months in a bid to prevent a resurgence of the deadly Ebola virus. Duration: 01:17 Video provided by AFP
Powered by NewsLook.com
These Popular Antibiotics Can Cause Permanent Nerve Damage

These Popular Antibiotics Can Cause Permanent Nerve Damage

Newsy (Mar. 27, 2015) A popular class of antibiotic can leave patients in severe pain and even result in permanent nerve damage. Video provided by Newsy
Powered by NewsLook.com
WH Plan to Fight Antibiotic-Resistant Germs

WH Plan to Fight Antibiotic-Resistant Germs

AP (Mar. 27, 2015) The White House on Friday announced a five-year plan to fight the threat posed by antibiotic-resistant bacteria amid fears that once-treatable germs could become deadly. (March 27) Video provided by AP
Powered by NewsLook.com
House Ready to Pass Medicare Doc Bill

House Ready to Pass Medicare Doc Bill

AP (Mar. 26, 2015) In rare bipartisan harmony, congressional leaders pushed a $214 billion bill permanently blocking physician Medicare cuts toward House passage Thursday, moving lawmakers closer to resolving a problem that has plagued them for years. (March 26) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins