Thursday July 19, 2018

Breastfeeding May Reduce Hypertension Risk

For the study, published in the American Journal of Hypertension, researchers examined 3,119 non-smoking postmenopausal women aged 50 years or older in the 2010-2011 Korea National Health and Nutrition Examination Survey

0
//
40
Evidence from epidemiologic data has also shown the beneficial effects of breastfeeding on the health of infants and their mothers. Pixabay
Evidence from epidemiologic data has also shown the beneficial effects of breastfeeding on the health of infants and their mothers. Pixabay
Republish
Reprint
  • Women who breastfeed more children and for a longer duration were less likely to suffer from hypertension after they reach menopause
  • Evidence from epidemiologic data has also shown the beneficial effects of breastfeeding on the health of infants and their mothers
  • The study was published in the American Journal of Hypertension

Breastfeeding mothers, take note! New research suggests that women who breastfeed more children and for a longer duration were less likely to suffer from hypertension after they reach menopause.

According to the researchers, elevated blood pressure is the greatest single risk factor for disease and mortality.

“Our findings endorsed the current recommendations for breastfeeding for the benefit of maternal health in later lives,” said the lead author of the study, Nam-Kyong Choi from Ewha Woman’s University in South Korea.

ALSO READ: World Breastfeeding Week: Breast milk, the answer to malnutrition in children

Evidence from epidemiologic data has also shown the beneficial effects of breastfeeding on the health of infants and their mothers.

It has been well documented that long-term breastfeeding is associated with reduced children’s allergies, celiac disease, obesity, and diabetes mellitus, the researchers said.

However, the effects of breastfeeding on maternal health have been little studied compared with the effects on the children.

Several studies have consistently found that absence of breastfeeding or premature discontinuation was associated with increased risks of diabetes mellitus, dyslipidemia, metabolic syndrome, coronary heart disease and cardiovascular diseases, the researchers mentioned. Pixabay
Several studies have consistently found that absence of breastfeeding or premature discontinuation was associated with increased risks of diabetes mellitus, dyslipidemia, metabolic syndrome, coronary heart disease and cardiovascular diseases, the researchers mentioned. Pixabay

 

For the study, published in the American Journal of Hypertension, researchers examined 3,119 non-smoking postmenopausal women aged 50 years or older in the 2010-2011 Korea National Health and Nutrition Examination Survey.

They found that breastfeeding of more children and for longer duration was associated with lower risk of hypertension in postmenopausal women.

ALSO READ: Breastfeeding of new-born babies during the first hour after birth is less than 50 percent in India

In particular, the highest quintile of a number of children breastfed (five to 11) showed a 51 percent lower risk of hypertension compared with the lowest quintile (zero to one).

The highest quintile of the duration of breastfeeding (96 to 324 months) showed a 45 percent lower risk of hypertension.

The researchers, however, said that this link may prove to be less true in obese women. (IANS)

Click here for reuse options!
Copyright 2018 NewsGram

Next Story

Electric Fields Used By Spiders To Take Flight: Research

Charles Darwin remarked on the behavior when tiny spiders landed on the HMS Beagle, trailing lines of silk.

0
A spider sits in her web. Researchers from England think spiders might be sensing and using electrostatic fields to become airborne.
A spider sits in her web. Researchers from England think spiders might be sensing and using electrostatic fields to become airborne. VOA

Since the 1800s, scientists have marveled at how spiders can take flight using their webbing. Charles Darwin remarked on the behavior when tiny spiders landed on the HMS Beagle, trailing lines of silk. He thought the arachnids might be using heat-generated updrafts to take to the sky, but new research shows a totally different cause may be at play.

Erica Morley and Daniel Robert from the University of Bristol in England were interested in exploring a second explanation for the spiders’ ability. They thought spiders might sense and use electrostatic fields in the air.

“There have been several studies looking at how air movement and wind can get spiders airborne, but the electrostatic hypothesis was never tested,” Morley told VOA.

Some observers suggested electrostatic fields might be the reason the multiple draglines some spiders use to float don’t get tangled with each other. Biologist Kimberley Sheldon from the University of Tennessee at Knoxville, who was not involved in the new research, pointed out that “though these spiders will have five or six draglines, those strands of silk do not get entangled. So we’ve known for a while that electrostatics probably [are] at least interacting with the spider, with the silk lines themselves, to keep them from getting tangled.”

Morley and Robert created a box with a grounded metal plate on the bottom and a plate on the top that they could pass an electrical current through. The scientists placed spiders in the box and turned on the voltage, watching as the creatures reacted to the electric field.

Reaction to current

When the electric field was on, the spiders lifted their abdomens into the air and started tiptoeing by raising up on the very ends of their legs. Morley told VOA that spiders only tiptoe right before they release silk draglines to fly away, in a process called ballooning.

And when the spiders did balloon and rise into the air, turning off the electric current caused them to drop.

Sheldon compared it to taking a balloon and rubbing it against your clothing. “If you hold the balloon [near your head], your hair stands on end. That’s kind of what’s happening with the spider silk.”

Spiders Use Electric Fields to Take Flight: Research
Spiders Use Electric Fields to Take Flight: Research. Pixabay

Clearly the spiders were able to sense the local electrostatic field and respond appropriately by releasing silk, but Morley and Robert wanted to know how.

“As a sensory biologist, I was keen to understand what sensory system they might use to detect electric fields,” said Morley. “We know that they have very sensitive hairs that are displaced by air movements or even sound. So I thought that it’s possible that they might be using these same hairs to detect electric fields.”

This was exactly what she observed. The small hairs along the spiders’ legs react not only to physical experiences like a breeze but also to the electric field. In nature, it makes sense for spiders to sense both the electrostatic field around them as well as wind conditions. Spiders probably use both when taking off and navigating the skies.

Mathematician Longhua Zhao from Case Western Reserve University in Cleveland has made computer models of how spiders balloon. She told VOA, “I think that both the electrical field and the fluid mechanics [of air flow] are important. They definitely play very important roles. However, we don’t know at this point which is the dominant factor.”

Also read: Did You Hear about the New Species of Spiders Named After Leonardo DiCaprio, Bernie Sanders and Barrack Obama?

Lead researcher Morley pointed out that spiders aren’t the only invertebrates to balloon. “Caterpillars and spider mites, which are arachnids but not spiders, balloon as well.” Morley hopes to see others follow up her research to see if these other animals respond in a way similar to the spiders. (VOA)