THURSDAY, July 19, 2018 (HealthDay News) -- Fresh air is in short supply at U.S. national parks, a new study shows.

Researchers found that from 1990 to 2014, average concentrations of ozone air pollution in 33 of the nation's largest national parks were the same as in the 20 largest cities in the country.

Despite improvements... Full Page

THURSDAY, July 19, 2018 (HealthDay News) -- A close look at U.S. congressional districts has yielded new information about the opioid crisis: The highest rates of prescriptions for opioid painkillers are in the Southeast, Appalachia and the rural West.

Focusing on prescribing rates for opioids like Oxycontin in congressional districts ... Full Page

THURSDAY, July 19, 2018 (HealthDay News) -- After the U.S. Food and Drug Administration announced last week that certain brands of blood pressure medicines contained a carcinogen and were being recalled, many patients may wonder what's next for their cardiovascular care.

The FDA said it mandated the recall because valsartan medicines f... Full Page

THURSDAY, July 19, 2018 (HealthDay News) -- Many family members of intensive care unit (ICU) patients are reluctant to tell medical staff of worries about their loved one's care, a new study finds.

"Speaking up is a key component of safety culture, yet our study -- the first to our knowledge to address this issue -- revealed substantia... Full Page

THURSDAY, July 19, 2018 (HealthDay News) -- Over the last four decades, more American teenagers have decided to say no to drugs and alcohol, a new report shows.

"There has been a steady increase in the proportion of students graduating high school who report never having tried alcohol, marijuana, tobacco or any other drugs," said stud... Full Page

THURSDAY, July 19, 2018 (HealthDay News) -- An adrenaline shot can restart your heart if it suddenly stops beating, but a new trial shows that chances are you might not return to much of a life if you survive.

People who suffered cardiac arrest and were resuscitated with adrenaline had an almost doubled risk of severe brain damage, res... Full Page

THURSDAY, July 19, 2018 (HealthDay News) -- People with curable cancers who try "complementary therapy" often refuse some part of standard care. And they may die as a result, researchers say.

U.S. cancer patients increasingly use complementary medicine -- a combination of standard care along with therapies that fall outside of mainstre... Full Page

THURSDAY, July 19, 2018 (HealthDay News) -- Can you trust your very first childhood memories?

Maybe not, a new study suggests.

People's earliest memories are typically formed around 3 to 3.5 years of age, past research has shown.

But in a survey of more than 6,600 people, British scientists found that 39 percent of ... Full Page

THURSDAY, July 19, 2018 (HealthDay News) -- The Great Recession continues to take a grim toll: Since 2009, a growing number of Americans have died from liver disease and liver cancer.

The increase among 25- to 34-year-olds is especially troubling because the deaths are due to cirrhosis, a disease caused by excessive drinking, the auth... Full Page

THURSDAY, July 19, 2018 (HealthDay News) -- Using any form of nicotine during pregnancy or while nursing may raise a baby's risk for sudden infant death syndrome (SIDS), new animal research suggests.

The findings indicate that nicotine patches or electronic cigarettes may not be a safe alternative to cigarettes during pregnancy, the st... Full Page

THURSDAY, July 19, 2018 (HealthDay News) -- Using sulfonylurea drugs with or instead of metformin to control blood sugar increases type 2 diabetics' risk of serious complications, a new study finds.

Metformin is a first-line treatment for type 2 diabetes, meaning it is the first drug that will be tried. But sulfonylureas are the most o... Full Page

THURSDAY, July 19, 2018 (HealthDay News) -- A personal trainer can design an exercise program to meet your fitness goals, keep you motivated and adapt your training as you progress.

But your first step is finding a qualified professional.

While there aren't any national standards or minimum requirements for someone to call th... Full Page

WEDNESDAY, July 18, 2018 (HealthDay News) -- An FDA-approved supplement reduces episodes of severe pain in people with sickle cell disease, a new clinical trial shows.

Endari, a medicine-grade version of the dietary supplement L-glutamine, reduced sickle cell patients' number of acute pain crises by 25 percent compared with a placebo, ... Full Page

WEDNESDAY, July 18, 2018 (HealthDay News) -- Young adults raised by lesbian moms show the same mental well-being as those who grew up with heterosexual parents, a new study suggests.

The findings, published in the July 19 issue of the New England Journal of Medicine, come from the largest, longest-running study to track developm... Full Page

WEDNESDAY, July 18, 2018 (HealthDay News) -- A woman's pregnancy history may predict her risk for developing Alzheimer's disease, new research suggests.

"We found that women who had given birth to five or more children were 70 percent more likely to develop Alzheimer's disease than women who gave birth to fewer children," said study au... Full Page

WEDNESDAY, July 18, 2018 (HealthDay News) -- Students gain when teachers focus on positive behavior.

So say British researchers who examined the impact of a program designed to train teachers to build strong social relationships with their students. They're encouraged to ignore minor bad behavior, and acknowledge good behavior.

WEDNESDAY, July 18, 2018 (HealthDay News) -- Everyone knows that exercise is good for your heart, but what if your only option is to run or walk through smoggy city streets? Does it still pay off in the long run?

Yes, contends a nearly 20-year study.

"Air pollution isn't an excuse to skip exercise. Even in areas with pollutio... Full Page

WEDNESDAY, July 18, 2018 (HealthDay News) -- Few women consider the scary possibility that they might suffer a heart attack during or right after their pregnancy, but a new report shows it has become a more common reality in recent years.

Along with the fact that women are having children at an older age, rising rates of obesity and di... Full Page

WEDNESDAY, July 18, 2018 (HealthDay News) -- Pain, sleep problems and mental health disorders are common in the five years before someone is diagnosed with multiple sclerosis, a new study reveals.

Knowing about these symptoms could help doctors diagnose and start treating MS earlier, possibly slowing the damage it causes to the brain a... Full Page

WEDNESDAY, July 18, 2018 (HealthDay News) -- Lowering the default number of opioid painkillers in electronic prescription systems reduced overall use of the drugs, a new study finds.

In electronic medical-record systems, prescriptions have a default number of pills. It's been suggested that reducing this number may help curb the use of... Full Page