Featured Research

from universities, journals, and other organizations

Babies Fond Of Salt Have Higher Blood Pressure, A Granny With Hypertension

Date:
August 12, 2002
Source:
American Heart Association
Summary:
Within three days of birth some babies exhibit a unique response to salty taste – and the response is strongest in babies who have at least one grandparent with a history of hypertension, according to new research reported in Hypertension: Journal of the American Heart Association.

DALLAS, Aug. 9 – Within three days of birth some babies exhibit a unique response to salty taste – and the response is strongest in babies who have at least one grandparent with a history of hypertension, according to new research reported in today's rapid access issue of Hypertension: Journal of the American Heart Association.

Healthy babies who had a "preferential response" to salt taste – measured by a relative increase in sucking activity – and who had at least one grandparent with a history of high blood pressure had "blood pressures that averaged 5 millimeters of mercury (mmHg) or more higher than babies who had an aversive or neutral response to salt," says lead author of the study, Stephen H. Zinner, M.D., chairman of medicine at Mount Auburn Hospital in Cambridge, Mass. and professor of medicine at Harvard Medical School.

This study suggests that salt taste response in newborns might be a "proxy measure of salt sensitivity," he says.

Zinner and colleagues tested 283 healthy babies to determine if their sucking response to taste of salt or sugar was associated with a difference in blood pressure. "Very importantly the response to sweet taste had no relationship [to blood pressure], so there is something apparently specific to the response to salt taste that may be linked to blood pressure," he explains. "These babies were not fed salt. They were exposed to a tiny salt or sugar taste stimulus on the tongue."

Because blood pressure is not routinely measured in healthy newborns, Zinner and his colleagues did not compare blood pressure measurements to normal or set values as would be done in adults. Instead, they grouped infants based on the sucking response to water, water and sugar and water and salt taste. The rate of sucking was measured by the rate of sucking that followed each stimulus – increased sucking indicating a preferential response and decreased sucking an aversive response. The response was measured using a recording device connected to a specially designed nipple that delivers microdrops of the fluid at a time.

Blood pressures in the groups – aversive salt taste response, preferential response, and neutral response – were measured and compared.

Sixty-seven of the 234 babies available for follow-up blood pressure measurements at one- month had preferential salt responses. Compared to babies with aversive responses to salt, diastolic blood pressure averaged 3.1 mmHg higher and systolic blood pressures averaged 3.3 mmHg higher in babies who demonstrated a salt preference. The systolic pressure is the first or higher number in a blood pressure reading while diastolic, the second number, is the lower number.

In newborns with a salt preference who also had a grandparent being treated for high blood pressure, their average diastolic pressure was 5.0 mmHg higher and average systolic pressure was 6.7 mmHg higher than babies with an aversive response. At one month of age, blood pressures were still 3.8 to 9.6 mm Hg higher in these babies who had preferential responses as newborns.

Hypertension experts have linked salt intake to high blood pressure in some adults, especially those who are considered salt-sensitive, meaning that even low levels of salt trigger increases in blood pressure, but Zinner cautions against making the leap from salt taste response in infancy to hypertension in adults.

He says it is would be premature to suggest that neonatal testing can identify individuals at risk for adult hypertension.

Co-authors were Stephen T. McGarvey, Lewis P. Lipsitt, and Bernard Rosner. The research was partly by funded the National Institutes of Health.


Story Source:

The above story is based on materials provided by American Heart Association. Note: Materials may be edited for content and length.


Cite This Page:

American Heart Association. "Babies Fond Of Salt Have Higher Blood Pressure, A Granny With Hypertension." ScienceDaily. ScienceDaily, 12 August 2002. <www.sciencedaily.com/releases/2002/08/020812070931.htm>.
American Heart Association. (2002, August 12). Babies Fond Of Salt Have Higher Blood Pressure, A Granny With Hypertension. ScienceDaily. Retrieved August 28, 2014 from www.sciencedaily.com/releases/2002/08/020812070931.htm
American Heart Association. "Babies Fond Of Salt Have Higher Blood Pressure, A Granny With Hypertension." ScienceDaily. www.sciencedaily.com/releases/2002/08/020812070931.htm (accessed August 28, 2014).

Share This




More Health & Medicine News

Thursday, August 28, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

CDC Director On Ebola Outbreak: 'It's Worse Than I Feared'

CDC Director On Ebola Outbreak: 'It's Worse Than I Feared'

Newsy (Aug. 28, 2014) CDC director Tom Frieden says the Ebola outbreak is even worse than he feared. But he also said there's still hope to contain it. Video provided by Newsy
Powered by NewsLook.com
Treadmill 'trips' May Reduce Falls for Elderly

Treadmill 'trips' May Reduce Falls for Elderly

AP (Aug. 28, 2014) Scientists are tripping the elderly on purpose in a Chicago lab in an effort to better prevent seniors from falling and injuring themselves in real life. (Aug.28) Video provided by AP
Powered by NewsLook.com
Japan's Golden Generation Shows No Sign of Slowing Down

Japan's Golden Generation Shows No Sign of Slowing Down

AFP (Aug. 27, 2014) For many people in the autumn of their lives, walking up stairs is the biggest physical challenge they face. But in Japan, race tracks, hammer or pole vault await competitors at the Kyoto Masters, some of them more than 100 years old. Duration: 02:32 Video provided by AFP
Powered by NewsLook.com
Mini Pacemaker Has No Wires

Mini Pacemaker Has No Wires

Ivanhoe (Aug. 27, 2014) Cardiac experts are testing a new experimental device designed to eliminate major surgery and still keep the heart on track. Video provided by Ivanhoe
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:
from the past week

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