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Results for search "Genetics".

09 Nov

Genetics and Life Span

Your genetic makeup may not have much impact on how long you live.

Health News Results - 184

WEDNESDAY, July 17, 2019 (HealthDay News) -- The largest study of its kind, involving more than 2 million people across five countries, finds that autism spectrum disorders are 80% reliant on inherited genes.

That means that environmental causes are responsible for just 20% of the risk.

The findings could open new doors to research into the genetic causes of autism, ...

TUESDAY, July 16, 2019 (HealthDay News) -- It's not easy maintaining a healthy weight. Even when you manage to drop a few pounds, they often return.

Why would the body seem to encourage obesity?

New research suggests the answer lies far back in human evolution, with an anti-starvation mechanism that primes the body to store fat.

The key to this mechanism is a prot...

TUESDAY, July 16, 2019 (HealthDay News) -- You might think that stress affects you only emotionally or that a lack of sleep simply leaves you feeling cranky. But these are among the many lifestyle factors that can lead to health problems because of changes that they cause within your body's cells.

Packed inside every cell is your DNA and its strands of chromosomes. Chromosomes are pro...

THURSDAY, June 27, 2019 (HealthDay News) -- Every college student misplaces keys or forgets an appointment from time to time. Usually it's no big deal. But a new study warns that when young people with a family history of Alzheimer's disease have memory lapses, it could be an early sign of something serious.

That's the concern raised by a new memory test taken by nearly 60,000 men and...

TUESDAY, June 25, 2019 (American Heart Association News) -- Medication can play a huge role in reducing high blood pressure, a leading cause of stroke, heart attack and other serious health problems. Yet given the wide selection of drugs for doctors to choose from, figuring out which drug works best for someone is difficult.

But researchers may have found a better way to predict the ...

THURSDAY, June 20, 2019 (HealthDay News) -- Children with birth defects may be at increased risk for childhood cancer, a new study finds.

Researchers analyzed data from more than 10 million children born in Texas, Arkansas, Michigan and North Carolina between 1992 and 2013.

Compared to children without a birth defect, those with genetic defects were almost 12 times more like...

TUESDAY, June 18, 2019 (HealthDay News) -- In most patients with metastatic colon cancer, the disease may have begun spreading throughout the body very early on -- when the original tumor was no bigger than a poppy seed, a new study suggests.

Metastatic refers to the most advanced stage of cancer, when the original tumor has spread to distant sites in the body.

Traditionally...

TUESDAY, June 18, 2019 (HealthDay News) -- For women, predicting when they'll reach menopause is anyone's guess. But if you want to get some foresight, you should ask your mother.

For most women, menopause begins at around 52. But for thousands of women it starts much later, and for some, a lot earlier. Those whose menopause starts later may also be looking at a longer life expectancy...

TUESDAY, June 11, 2019 (HealthDay News) -- Can a DNA test predict a person's future heart health? Perhaps, researchers say.

A team of Canadian researchers found that by analyzing a person's entire genome, it might be possible to predict their future heart disease risk.

The so-called "polygenic risk score" analysis looks for key heart disease indicators -- genetic "biomark...

MONDAY, June 3, 2019 (HealthDay News) -- Last year, a scientist from China created a storm of controversy when he claimed he'd used gene-editing technology to create "designer" twin babies. Now, a new study is highlighting one of the dangers of that endeavor.

Researchers have found that the gene mutation the scientist used -- affecting a gene called CCR5 -- is associated with a shorte...

MONDAY, June 3, 2019 (HealthDay News) -- Ever wonder why a drug that works for someone else doesn't seem to work for you? You might want to check your gut for the answer.

Gut bacteria that process more than 150 medicines have been pinpointed by researchers, who also identified genes that give the bacteria this ability.

The findings underline the role gut bacteria play in how...

WEDNESDAY, May 29, 2019 (HealthDay News) -- A gene-based blood test can accurately detect breast, colorectal, lung, ovarian, pancreatic, gastric or bile duct cancers in patients, researchers report.

The test uses artificial intelligence to identify and interpret "fragments" of DNA in the blood that indicate the presence of cancer, explained researchers led by Dr. Victor Velculescu. He...

TUESDAY, May 28, 2019 (HealthDay News) -- Some folks are more prone to fainting than others, and the reason might lie in their DNA.

Danish researchers who analyzed millions of gene variants in DNA of 400,000 people have zeroed in on a gene that increases a person's risk for fainting.

It's believed that 20% to 30% of people faint at least once in their lifetime, often...

THURSDAY, May 23, 2019 (HealthDay News) -- It has long been known that lifestyle affects a person's risk of developing type 2 diabetes. Now, researchers report that they have identified rare variants of four genes that may also play a part.

For the study, an international team of scientists analyzed protein-coding genes from nearly 21,000 people with type 2 diabetes and 25,000 people...

TUESDAY, May 21, 2019 (HealthDay News) -- Could a love for canines be contained in your genes?

New research from Europe suggests that's so after comparing the genetic makeup of more than 35,000 twin pairs with dog ownership. The researchers concluded that genetic variations explained more than half of the likelihood of having a dog.

"We were surprised to see that a person's ...

FRIDAY, May 3, 2019 (HealthDay News) -- Cases in which a newborn's genitals make it unclear whether the child is a boy or girl may be more common than once believed, researchers say.

One example of what's known as ambiguous genitalia is a baby girl with an enlarged clitoris that looks more like a small penis, the study authors explained.

In some cases, infants have external ...

THURSDAY, May 2, 2019 (HealthDay News) -- An easy-to-use, noninvasive device can detect early signs of the cancer complication known as lymphedema, a new study reports.

Lymphedema is the buildup of fluid in the body's tissues when a part of the lymph system is damaged, as can happen in cancer care, according to the U.S. National Cancer Institute (NCI).

The fluid causes swelli...

WEDNESDAY, May 1, 2019 (HealthDay News) -- Polycystic ovary syndrome is a common cause of infertility and type 2 diabetes, but little is known about its origins. Now, new research suggests a gene involved in male hormone production plays a big role in the disorder's development.

"We're starting to make headway on what causes PCOS [polycystic ovary syndrome]. It's very frustrating for...

THURSDAY, April 18, 2019 (HealthDay News) -- As obesity becomes epidemic among Americans, many could over- or underestimate their odds for piling on the pounds. But a new genetic "score" might take the guesswork out of all of that, researchers say.

Using information on more than 2 million gene variants linked to body weight, the scientists created a so-called polygenic score that ma...

THURSDAY, April 11, 2019 (HealthDay News) -- Poverty may influence how genes function, researchers report.

Specifically, they found that poverty is associated with levels of DNA methylation -- which can shape gene expression -- in nearly 10% of genes.

The findings are significant for a number of reasons, the researchers said.

"First, we have known for a long ti...

THURSDAY, April 4, 2019 (HealthDay News) -- Beauty is in the eyes of the beholder, but it might also be tucked away in a handful of genes.

Using genetic information on nearly 4,400 white adults, researchers found that certain genetic mutations were tied to people's beauty ratings from their peers.

Genes were linked to both women's and men's ratings -- but there were differen...

FRIDAY, March 29, 2019 (American Heart Association News) -- Kristen Criss' father died of complications from a stroke, her mother died from a heart condition at age 40 and her sister passed away at 33.

Still, it would be many years -- and health struggles of her own -- before she realized the full meaning of having a family history of heart disease.

Criss discovered in 201...

THURSDAY, March 28, 2019 (HealthDay News) -- Jo Cameron, 71, has lived a life without pain.

The Scottish woman has experienced childbirth, broken limbs, cuts, burns and surgeries with little or no discomfort. She's leaned on her own hot stove and not realized there's a problem until she smelled something burning.

"I'm vegan, so the smell is pretty obvious," the former school...

THURSDAY, March 14, 2019 (HealthDay News) -- People whose high cholesterol is resistant to treatment with statin drugs may soon have a new treatment option.

This new class of drugs helps block synthesis of artery-clogging cholesterol, researchers explained. The drugs target an enzyme called ATP citrate lyase (ACL), part of the production pathway for "bad" LDL cholesterol in the body.

THURSDAY, March 14, 2019 (HealthDay News) -- It's one of the toughest cancers to beat. But new research suggests that identifying the genetics of pancreatic cancer in individual patients could boost survival for some.

The five-year survival rate for pancreatic cancer patients is less than 9 percent. One reason this cancer is so deadly is that many patients are diagnosed at a late sta...

WEDNESDAY, March 13, 2019 (HealthDay News) -- A grandparent's mental decline or a great uncle's waning memory may indicate you, too, have greater risk for Alzheimer's disease -- especially if closer relatives have the condition, a new study says.

Alzheimer's in both a first-degree relative (parents, siblings) and a second-degree relative (grandparent, aunt, uncle, nieces or nephews) ...

WEDNESDAY, March 13, 2019 (HealthDay News) -- The controversy over a Chinese scientist who claimed he created gene-edited babies has prompted the U.S. National Institutes of Health to join an international moratorium on such research.

"Today, leading scientists and ethicists from seven countries have called for an international moratorium on the use of genetic editing to modify the hu...

TUESDAY, March 12, 2019 (HealthDay News) -- Women who get pregnant when using certain contraceptives might have their genes to blame, a new study suggests.

A gene variant that breaks down hormones in birth control could be the culprit, researchers reported.

"When a woman says she got pregnant while on birth control, the assumption was always that it was somehow her fault," s...

TUESDAY, March 12, 2019 (HealthDay News) -- Two chemicals found in household products and food could harm male fertility in both dogs and people, U.K. researchers say.

The chemicals are the plasticizer DEHP -- used in products such as carpets, flooring, upholstery, clothes, wires and toys -- and the industrial chemical polychlorinated biphenyl 153 (PCB153). Even though it is banned wo...

THURSDAY, March 7, 2019 (HealthDay News) -- High testosterone levels can drastically increase a man's risk of heart failure and stroke-causing blood clots, a new study reports.

Men with a genetic predisposition to high testosterone levels have a nearly eightfold increased risk of heart failure and twice the risk of thromboembolism (blood clots that can block veins or arteries leading ...

FRIDAY, March 1, 2019 (HealthDay News) -- The largest study to date of the genetic underpinnings of Alzheimer's has uncovered five new gene mutations that make people more vulnerable to the memory-robbing disease.

The international team of scientists analyzed the DNA of more than 94,000 people collected by the four groups that make up the International Genomic Alzheimer's Project.

...

FRIDAY, March 1, 2019 (HealthDay News) -- Your long-term happiness in marriage may hinge on the genes you and your partner bring to the union.

A Yale University study suggests marital bliss could be influenced by a genetic variation that affects oxytocin, the so-called "love hormone" that is involved in social bonding.

"This study shows that how we feel in our close relation...

THURSDAY, Feb. 28, 2019 (HealthDay News) -- They are among the rarest types of human beings -- so-called "semi-identical" twins.

Now, doctors in Australia say they've identified the world's second known set of these twins, born from an egg fertilized by two sperm.

Semi-identical twins (sesquizygotic) are classed as a third type of twin, in addition to identical and fraternal...

MONDAY, Feb. 25, 2019 (HealthDay News) -- Melanoma patients who are recent and current smokers have lower survival rates than nonsmokers, suggesting that smoking may weaken immune response to the most deadly skin cancer, researchers say.

In a study of more than 700 melanoma patients in the United Kingdom, smokers were 40 percent less likely to survive melanoma than people who hadn't ...

MONDAY, Feb. 25, 2019 (HealthDay News) -- Can't sleep at night? Perhaps genetics is to blame.

In a new study, dozens of gene regions linked to insomnia have been pinpointed, and researchers also report a link between insomnia and heart disease.

American and British investigators analyzed data from more than 450,000 people in the United Kingdom -- 29 percent of whom reported...

TUESDAY, Feb. 19, 2019 (HealthDay News) -- Women who have specific mutations in genes known as BRCA are at increased risk for breast and ovarian cancers. Now, an influential expert panel reaffirms that certain women should be screened for the genes.

The draft recommendation comes from the U.S. Preventive Services Task Force, whose advisories often guide physician practice and insuranc...

MONDAY, Feb. 18, 2019 (HealthDay News) -- A large, new study has uncovered 24 genetic variations that help separate the apple-shaped people from the pear-shaped ones.

Researchers said the findings help explain why some people are prone to carrying any excess weight around the belly. But more importantly, they could eventually shed light on the biology of diseases linked to obesity -- ...

MONDAY, Feb. 11, 2019 (HealthDay News) -- Binge and heavy drinking may trigger DNA changes that make your booze cravings worse, a new study says.

"We found that people who drink heavily may be changing their DNA in a way that makes them crave alcohol even more," said senior study author Dipak Sarkar. He directs the endocrine program in the School of Environmental and Biological Scienc...

MONDAY, Jan. 28, 2019 (HealthDay News) -- The supply of donor organs for infants needing a heart transplant is critically low, but researchers have taken a first step toward using pig hearts to fill the need.

The concept of using animal organs to save human lives has been around for years. With donor organs in short supply, the hope is that animal organs can keep patients alive while ...

FRIDAY, Jan. 25, 2019 (HealthDay News) -- Scientists who assembled the genome of a salamander renowned for its ability to regenerate body parts say the achievement could be an important step toward finding ways to regrow human body parts.

The axolotl is a salamander whose only native habitat is a lake near Mexico City.

"It's hard to find a body part they can't regenerate: th...

THURSDAY, Jan. 24, 2019 (HealthDay News) -- While some people fight the "battle of the bulge" for a lifetime, others seem to effortlessly stay slim. And now scientists say it all boils down to genetics.

Certain DNA helps decide whether weight gain is a torment or not for people, British researchers report.

"It's easy to rush to judgment and criticize people for their weight,...

WEDNESDAY, Jan. 23, 2019 (HealthDay News) -- The most potent drug available for Parkinson's disease, levodopa, treats symptoms of the disease but does nothing to either ease or increase its still-mysterious underlying causes, a new clinical trial has concluded.

Doctors often delay prescribing levodopa, or L-dopa, to Parkinson's patients for fear that the drug might have toxic effects th...

FRIDAY, Jan. 18, 2019 (HealthDay News) -- Do you shy away from risky business or cast caution aside and go for it?

Either way, your answer could come from your DNA.

Scientists have identified more than 100 genetic variants linked with risk-taking, according to a groundbreaking new study.

"Genetic variants that are associated with overall risk tolerance -- a measu...

WEDNESDAY, Jan. 16, 2019 (HealthDay News) -- The most common genetic disorder among northern Europeans -- called hemochromatosis -- occurs more often than previously thought, according to a new study.

The researchers also found that people with the condition often develop serious health problems.

People with hemochromatosis -- a build-up of iron in the body that can damage t...

MONDAY, Jan. 14, 2019 (HealthDay News) -- Two of every five common diseases are at least partially influenced by a person's genetics, the largest U.S. study of twins ever conducted finds.

Nearly 40 percent of 560 different diseases have a genetic component, while 25 percent are driven by environmental factors shared by twins who are growing up in the same household, the researchers re...

FRIDAY, Jan. 11, 2019 (HealthDay News) -- Your chances of inheriting genes linked to longevity are highest if you come from a family with many long-lived members, researchers say.

And that includes aunts and uncles, not just parents.

Using databases at the University of Utah and in the Dutch province of Zeeland, investigators analyzed the genealogies of nearly 315,000 people...

FRIDAY, Jan. 4, 2019 (HealthDay News) -- A program that maps out the genes of newborns has allowed researchers to identify risks for some inherited childhood conditions, many of which can be prevented.

The so-called BabySeq Project discovered that slightly more than 9 percent of infants carry genes that put them at risk for medical conditions as they reach childhood.

"The Ba...

WEDNESDAY, Dec. 19, 2018 (HealthDay News) -- New research shows that marijuana causes genetic changes in sperm, though it's not clear what effect those changes have, or if they're passed on to a man's children.

But the scientists said their findings suggest that men trying to have children should consider avoiding marijuana.

In experiments with rats and a study involving 24 ...

TUESDAY, Dec. 18, 2018 (HealthDay News) -- Researchers say they've identified genetic mutations linked with a blood vessel defect that can lead to deadly brain bleeds in babies.

A rare hereditary condition, called vein of Galen malformation, causes high-pressured blood to be pumped from arteries into veins. The veins aren't meant to handle such pressure and can rupture, spilling blood...

MONDAY, Dec. 17, 2018 (HealthDay News) -- Lots of Americans will unwrap a scarf or sweater this holiday season. But a growing number will receive a gift that's potentially life-changing: an at-home genetic testing kit.

Home DNA testing yields clues to ancestry and, potentially, genetic risk for medical conditions. But there are a number of things you need to know before you use one of...

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