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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 - 187

How Your Genes Affect the Number on Your Scale

THURSDAY, Sept. 12, 2019 (HealthDay News) -- Could your genes be keeping you from losing weight?

While you shouldn't use a family tendency toward wide hips or an apple shape as an excuse to stray from a healthy diet, acceptance can help you reassess your personal ideal and make you happier with your body.

Hundreds of genes have been linked to weight. Some affect where fat i...

Kids in Poor Neighborhoods Face Higher Odds for Obesity as Adults

FRIDAY, Sept. 6, 2019 (HealthDay News) -- Growing up in a poor neighborhood significantly increases kids' odds of becoming obese adults, and the risk is highest among teens, a new study says.

It found that children from poor neighborhoods had 31% higher odds for adult obesity, and the risk was much higher (29%) among 11- to 18-year-olds than for younger children (13%).

...

Scientists ID Genes Tied to Left-Handedness

THURSDAY, Sept. 5, 2019 (HealthDay News) -- For the first time, scientists have found four spots on your DNA that might determine whether you wield your pen with your left hand.

Of the four gene regions, three are associated with proteins involved in brain development and structure, according to a genetic analysis of about 400,000 people in the United Kingdom, including more than 38,0...

Even Small Improvements in Cholesterol, Blood Pressure Help Prevent Heart Attack

THURSDAY, Sept. 5, 2019 (HealthDay News) -- Small, lasting changes in cholesterol and blood pressure levels can dramatically reduce the risk of heart disease and strokes over a lifetime, new research suggests.

The large study found that a combination of a drop in LDL cholesterol (the bad type) of 14 mg/dL and a 5 mm Hg drop in systolic blood pressure (the top number in a blood pressur...

Lifestyle May Matter More Than Your Genes in Early Heart Disease

MONDAY, Sept. 2, 2019 (HealthDay News) -- An unhealthy lifestyle is a bigger contributor to heart disease than genetics for many younger adults, according to a new study.

The findings show that good health habits should be a key part of prevention efforts, even in people with a family history of early heart disease, researchers said.

The study inc...

There Is No 'Gay Gene,' Major Study Concludes

THURSDAY, Aug. 29, 2019 (HealthDay News) -- There's no such thing as a single "gay gene" that drives a person's sexual behavior, concludes the largest genetic study ever conducted on the issue.

Instead, a person's attraction to those of the same sex is shaped by a complex mix of genetic and environmental influences, similar to what's seen in most other human traits, researchers report...

Staying Optimistic Might Lengthen Your Life, Study Shows

MONDAY, Aug. 26, 2019 (HealthDay News) -- An upbeat view of life may increase your odds for living to a ripe old age, new research suggests.

The finding stems from a look at optimism and longevity among nearly 70,000 women and 1,400 men. It builds on earlier research linking higher levels of optimism to lower risks of chronic illness and premature death.

"This study took us...

Dodge Dementia With Healthy Lifestyle

MONDAY, Aug. 26, 2019 (HealthDay News) -- Seniors, here's a recipe for preventing dementia: eat well, exercise and don't smoke.

The only catch, according to a new study? If you carry genes that leave you vulnerable to the memory-robbing disease, lifestyle might not be enough.

In the study, researchers found that of over 6,300 adults aged 55 and older, those with healthy habi...

U.S. Task Force Updates Breast Cancer Gene Testing Recommendations

TUESDAY, Aug. 20, 2019 (HealthDay News) -- Mutations in two genes -- BRCA1 and BRCA2 -- are known to significantly increase the risk of breast cancer, but experts have long debated which women should be tested for them.

New recommendations from the U.S. Preventive Services Task Force (USPSTF) may help clarify who can benefit most from a risk assessment test. Now, if a woman has a hig...

'Dr. Google' Helps Some Patients Diagnose a Rare Disease

MONDAY, Aug. 19, 2019 (HealthDay News) -- A middle-aged woman had persistent symptoms that doctors couldn't explain. Frustrated, she took an increasingly common route: a search through the internet.

"Dr. Google" led the woman to specialists at Wake Forest University Medical Center in Winston-Salem, N.C. There, she was diagnosed with a rare genetic condition...

Scientists Creating Gene Map of Human 'Microbiome'

WEDNESDAY, Aug. 14, 2019 (HealthDay News) -- The number of genes in bacteria that live in and on people could top 1 billion trillion -- and at least half appear to be unique to their host.

That mindboggling math comes from scientists at Harvard Medical School and Joslin Diabetes Center in Boston who have set out to map all genes of the human microbiome.

The research could re...

Scientists Uncover More Autism Genes

TUESDAY, Aug. 13, 2019 (HealthDay News) -- In a finding that underscores the major role genetics plays in autism risk, researchers report they have identified 16 new genes linked to the developmental disorder.

The investigators conducted genetic analyses of 2,300 people from nearly 500 families with at least two children with autism. Of the children in the study, 960 had autism and 21...

New Study Finds a Family Risk for Blood Cancer

THURSDAY, Aug. 8, 2019 (HealthDay News) -- If a close relative has had blood cancer, you're more likely to get it, a large new study reports.

The researchers analyzed data from 16 million people in Sweden, including more than 153,000 diagnosed with blood cancer and more than 391,000 of their first-degree relatives: parents, siblings or children.

Patients with a family link ...

Hair Loss Not Just a Male Problem

FRIDAY, Aug. 2, 2019 (HealthDay News) -- The sad sight of a receding hairline is not limited to men, a dermatologist says.

Hair loss is just as common in women, and it can occur due to factors such as genetics, and the hairstyles and hair products used by women.

It's important to identify the cause of hair loss in women to treat it, said dermatologist Dr. Paradi Mirmirani.<...

One Gene Change 2 Million Years Ago Left Humans Vulnerable to Heart Attack

MONDAY, July 29, 2019 (HealthDay News) -- As far as scientists know, humans are the only species that get heart attacks linked to clogged arteries.

Now, new research suggests that just one DNA change occurring 2 to 3 million years ago may be to blame.

The finding might give insight into how to prevent and treat the attacks, according to researchers at the University of Calif...

Autism Largely Caused by Genetics, Not Environment: Study

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, ...

Evolution Could Explain Why Staying Slim Is So Tough

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...

How to Protect Your DNA for Big Health Benefits

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...

Alzheimer's Genes Might Show Effects in Your 20s

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...

AHA News: Genetics May Help Predict the Right Blood Pressure Drug for You

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 ...

How Do Birth Defects Affect Childhood Cancer Risk?

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...

Many Advanced Colon Cancers Were 'Born' Ready to Spread

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...

Your Mom Plays a Role in Age at Menopause, Longevity

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...

Gene Test Might Someday Gauge Your Heart Attack Risk

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...

How Chinese Gene-Editing Could Backfire: Babies Might Have Shorter Lives

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...

Your Gut Bacteria Could Affect Your Response to Meds

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...

Blood Test Could Spot Multiple Cancer Types, Researchers Say

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...

Do You Have the 'Fainting Gene'?

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...

New Gene Variants for Type 2 Diabetes Found

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...

Your DNA Might Determine Whether You're a Dog Lover

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 ...

About 1 in 1,000 Babies Born 'Intersex,' Study Finds

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 ...

Device Spots Lymphedema Early in Breast Cancer Patients, to Help Stop It

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...

Male-Hormone Gene May Help Cause Polycystic Ovary Syndrome

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...

Will You Get Fat? Genetic Test May Tell

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...

Poverty Could Leave Its Mark on Genes

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...

Is Beauty In Your DNA?

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...

AHA News: Genetic Testing Helps Family Uncover Inherited Heart Condition

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...

Woman Feels No Pain, Thanks to Her Genes

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...

New Drug Could Help Those With Tough-to-Treat Cholesterol

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.

Genomics Could Improve Treatment of Pancreatic Cancer

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...

Even Distant Relatives' History Could Up Your Alzheimer's Risk

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) ...

After Chinese Infant Gene-Editing Scandal, U.S. Health Officials Join Call for a Ban

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...

Are Some Birth Control Methods Doomed to Fail?

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...

Common Household Chemicals Harm Sperm in Both Men and Dogs

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...

High Testosterone Levels Are Bad News for the Heart

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 ...

Scientists Find 5 New Genes That Sway Alzheimer's Risk

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.

...

Happiness in Marriage May Rest in Your Genes

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...

Rare Set of 'Semi-Identical' Twins Identified in Australia

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...

Smokers May Fare Worse Against the Deadliest Skin Cancer

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 ...

Insomnia May Be in Your Genes

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...

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