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Results for search "Anatomy / Biology".

Health News Results - 28

3-D Printers Might Someday Make Replacement Hearts

THURSDAY, Aug. 1, 2019 (HealthDay News) -- Scientists say they have taken an important step forward in creating 3-D printed hearts -- with the ultimate goal of making replacement tissue for organs and body parts damaged by disease or injury.

The 3-D printing process builds three-dimensional objects based on a computer model. Unlike traditional printing onto a flat surface, the machine...

Bigger Waistlines a Threat to Women's Health, Even Without Obesity

WEDNESDAY, July 24, 2019 (HealthDay News) -- A widening waistline can harm the health of older women, even if they avoid obesity, new research suggests.

It's a condition known as "central obesity" -- a concentration of fat around the abdomen. Central obesity can occur even if it's not enough to shift a person's body mass index (BMI) into the obese range, explained researchers led by W...

Did 'Puppy Dog Eyes' Evolve to Please Humans?

MONDAY, June 17, 2019 (HealthDay News) -- Pooches look up at people with quizzical, pleading eyes that are tough to resist. Now, research suggests evolution played a role in that irresistible gaze.

Dogs were domesticated more than 33,000 years ago and have changed over time to communicate with people, the study authors noted.

Dogs' eyebrows are particularly expressive. Dogs...

Having an Extra Finger Can Come in Handy

FRIDAY, June 7, 2019 (HealthDay News) -- Though rare, some children are born with an extra finger, a condition known as polydactyly.

Now, for the first time, a team of researchers set out to see whether having this extra appendage is somehow beneficial.

The answer is yes.

The bottom line: Having an additional finger significantly boosts a person's ability to manip...

All Her Organs Were in the Wrong Place, But Rose Bentley Lived to 99

MONDAY, April 8, 2019 (HealthDay News) -- Before her recent passing at the ripe old age of 99, Rose Marie Bentley harbored a remarkable secret.

Outwardly, nothing seemed out of place or extraordinary about this longtime resident of Oregon's rural northwest.

Bentley and her husband had five children and ran a farm and pet supply store in the town of Molalla. She taught Sunday...

Human Ancestors' Diet Led You to Pronounce Your F's and V's

FRIDAY, March 15, 2019 (HealthDay News) -- Think of it as another example of a refined palate.

The ability to make speech sounds such as "f" and "v" is due to diet-led changes in humans' bite, researchers say.

The range of speech sounds people can make was generally thought to be fixed since modern humans appeared about 300,000 years ago, but this new study challenges that ...

Female Anatomy May Play Big Role in Sperm's Success

WEDNESDAY, Feb. 13, 2019 (HealthDay News) -- In the race to conception, the female body is set up to separate weak sperm from strong, researchers report.

A woman's reproductive system presents a veritable obstacle course that stress-tests sperm, making sure that only the strongest swimmers have a chance of reaching a woman's egg, according to a new study.

Narrow gate-like p...

Like Coffee? You May Be Genetically Wired That Way

THURSDAY, Nov. 15, 2018 (HealthDay News) -- Coffee's bitter taste shouldn't be a selling point. But a genetic variant explains why so many people love the brew, a new study suggests.

Bitterness evolved as a natural warning system to protect people from harmful substances. That means they should want to spit out coffee, the researchers said.

But their study of more than 400,0...

The Bigger the Brain, the Bigger the Tumor Risk?

TUESDAY, Nov. 6, 2018 (HealthDay News) -- The bigger your brain, the greater your risk for a deadly brain cancer, new research from Norway suggests.

It's a matter of math: A large brain means more brain cells, and more cells means more cell divisions that can go wrong and cause mutations that trigger cancer, the study authors explained.

"Aggressive brain cancer is a rare ty...

Scientists Say Neanderthals Were Exposed to Lead, Too

WEDNESDAY, Oct. 31, 2018 (HealthDay News) -- The earliest evidence of lead exposure has been discovered in 250,000-year-old teeth from the remains of two Neanderthals found in southeastern France, researchers say.

"Traditionally, people thought lead exposure occurred in populations only after industrialization, but these results show it happened prehistorically, before lead had been w...

Map of Mouse Hippocampus Could Be Weapon Against Alzheimer's

WEDNESDAY, Oct. 17, 2018 (HealthDay News) -- A precision map of a part of the brain of the lowly mouse could be a potent new research tool against Alzheimer's, researchers say.

The highly detailed look at the mouse hippocampus should provide new insight into a range of brain diseases in humans, according to the research team from the University of Southern California.


Traffic Noise Is (Bad) for the Birds

TUESDAY, Aug. 28, 2018 (HealthDay News) -- City birds age faster than their country cousins and traffic noise may be the reason why, a new study suggests.

The research focused on telomeres -- caps on the ends of chromosomes that protect genes from damage. Shortening of telomeres indicates faster aging.

At 120 days of age, Zebra finches that were exposed to traffic noise afte...

Brain Scans Yield More Clues to Autism

TUESDAY, July 17, 2018 (HealthDay News) -- Children with autism show abnormalities in a deep brain circuit that typically makes socializing enjoyable, a new study finds.

Using MRI brain scans, researchers found that kids with autism showed differences in the structure and function of a brain circuit called the mesolimbic reward pathway.

That circuit, located deep within the ...

Brains May Be as Unique as Fingerprints

FRIDAY, July 13, 2018 (HealthDay News) -- New research suggests that no two brains are alike, as genetics and experience make their mark on your mind.

"With our study, we were able to confirm that the structure of people's brains is very individual," said study author Lutz Jancke. He is a professor of neuropsychology at the University of Zurich in Switzerland.

"Just 30 year...

Seniors, Feeling Young <i>Is</i> a State of Mind

WEDNESDAY, July 11, 2018 (HealthDay News) -- For seniors who feel years younger than they really are, a new study suggests it might not be their imagination.

"We found that people who feel younger have the structural characteristics of a younger brain," explained lead author Jeanyung Chey. She is a professor in the department of psychology & program for brain sciences at Seoul Nat...

Love Your Hair Color? You Have Over 100 Genes to Thank.

MONDAY, April 16, 2018 (HealthDay News) -- The color of your hair turns out to be a complicated thing, with a full 124 genes determining whether you wind up a blonde, brunette or redhead.

The researchers who pinpointed the origins of hair hue said their findings could improve understanding of health conditions linked to pigmentation, including skin, testicular, prostate and ovarian ca...

Scientists Say They Discovered a 'New Organ' in the Body

TUESDAY, March 27, 2018 (HealthDay News) -- The human body is full of surprises. The latest: A newly identified "organ" that might affect major diseases.

Using updated technology, U.S. scientists report they've discovered a "highway of moving fluid."

Layers of the body long believed to be dense, connective tissues are actually interconnected, fluid-filled compartments, the ...

ADHD Tied to Brain Size Changes in Young Children

TUESDAY, March 27, 2018 (HealthDay News) -- Young children with attention-deficit/hyperactivity disorder (ADHD) have smaller-than-normal brain regions that are crucial in controlling behavior, researchers have found.

Along with conducting MRI brain scans, the researchers assessed the thinking skills and behavior of 90 children, ages 4 and 5.

The investigators found that thos...

Astronauts May Get Space Fever

WEDNESDAY, Jan. 10, 2018 (HealthDay News) -- Weightlessness apparently causes astronauts' body temperatures to run a little hot while in space, a new study reports.

The researchers used forehead sensors to monitor the core body temperature of astronauts on the International Space Station. Measurements were taken before, during and after their venture.

When at rest in space, ...

Boy's Double Hand Transplant Changed His Brain

WEDNESDAY, Dec. 6, 2017 (HealthDay News) -- Two years ago, Zion Harvey was the first child to undergo a successful double hand transplant. Now he's gaining notoriety for another milestone: the way his brain reorganized itself in response to the amputation and transplantation.

Harvey, now 10, lost both hands because of a severe infection in infancy. The brain rewired itself after the a...

Breathing Trouble May Follow Preemies to Adulthood

FRIDAY, Dec. 1, 2017 (HealthDay News) -- People who were born prematurely may have smaller-than-normal airways in adulthood, which can cause respiratory problems, researchers say.

Premature birth is associated with poorer heart and lung function, but the reasons why have not been fully understood.

In a new study, investigators compared adults who were born eight weeks or mor...

Sunrise, Sunset: Ancient Rhythms Still Dictate Human Life

TUESDAY, Nov. 21, 2017 (HealthDay News) -- Humankind long ago conquered the darkness with the invention of artificial light. But new research shows that, by and large, the sun's daily cycle still dictates people's activity.

Finnish researchers say most people still schedule their daily routines around the natural ebb and flow of daylight.

The team, led by Daniel Monsivais of...

Early Humans Grew Taller Long Before Bulking Up

TUESDAY, Nov. 7, 2017 (HealthDay News) -- As humans evolved, height and weight developed at different rates.

That's the conclusion of researchers who analyzed 311 fossil specimens of modern-day human's hominin ancestors, dating from 4.4 million years ago to humans who lived after the last ice age.

Hominin evolution was a "long and winding road with many branches and dead end...

Resilient Brain Connections May Help Against Alzheimer's

THURSDAY, Nov. 2, 2017 (HealthDay News) -- Certain pieces of brain structure may make some people less likely to develop Alzheimer's disease.

That's the conclusion of a new study that could lead to new ways to prevent or slow the memory-destroying disease, researchers said.

For the study, the researchers analyzed brain samples from patients at memory clinics and found that t...

Scientists Spot Genes Behind Skin Color

THURSDAY, Oct. 12, 2017 (HealthDay News) -- Humans come in a range of colors, and new research is getting a step closer to how that happens.

Newly identified gene variants tied to skin colors among Africans could offer insights into human evolution. The findings could also boost scientists' understanding of skin cancer and other conditions, researchers say.

"We have identifi...

Working Night Shifts May Widen Your Waistline

WEDNESDAY, Oct. 4, 2017 (HealthDay News) -- Workers who regularly pull overnight shifts may be more prone to pack on the pounds, a new analysis suggests.

The finding involved an in-depth look at 28 studies conducted between 1999 and 2016.

All the investigations explored the health impact of shift work, in which employees are regularly asked to either alternate between daytim...

Semen Harbors Wide Range of Viruses

WEDNESDAY, Sept. 13, 2017 (HealthDay News) -- Human semen provides a potential hiding place and breeding ground for a host of dangerous viruses, a new evidence review reports.

The analysis of current medical literature revealed genetic evidence of 27 infectious viruses found in semen, including dread-inducing agents like Zika, Ebola, Marburg, Lassa fever and chikungunya, along with ...

Can Scans Predict Some Autism Cases?

TUESDAY, Aug. 8, 2017 (HealthDay News) -- People with a particular genetic cause of autism show structural abnormalities in the brain that are readily detected with noninvasive imaging, according to a new study.

Using MRI brain scans, researchers found clear brain structure abnormalities in people with autism caused, in part, by defects in chromosome 16.

Those MRI findings w...