The National Ambient Air Quality Standard allows for ozone concentrations of up to 75 parts per billion over an eight-hour period. But a new study "found that 6.6 hours exposure to mean ozone concentrations as low as 70 parts per

Rarely, they can be a sign of a nervous system disorder, the U.S. National Library of Medicine says. Signals of a serious muscle problem include a change in muscle sensation, size, and a feeling of muscle weakness .

The first sign came while practicing -- 81-year-old Leroy Geer struggled to see the chords on the page. Soon he cut back on driving and stopped reading when even large print turned fuzzy.

Those recommendations will assume that a safe and effective vaccine will be available by October in sufficient quantity to start a mass vaccination program in the United States. If all goes well, the safety and effectiveness of the vaccine should

Researchers say that the dye, called Brilliant Blue G (BBG), stops the cascade of molecular events that can expand the area of injury and permanently worsen paralysis.

If the current swine flu pandemic behaves like the 1918 flu, antiviral drugs would not significantly reduce death rates among people older than 65 and, in fact, might cause the H1N1 virus to develop increased drug resistance, according to Stefano

The shortage could lead to diminished quality of care and delays in care for people needing heart and lung surgery , according to the study, which was done by the Center for Workforce Studies at the Association of American Medical

The trial involved sildenafil -- marketed as Viagra when it is used to treat erectile dysfunction and Revatio when used for pulmonary arterial hypertension, or high blood pressure in the lungs.

This study shows a modest protective effect of dietary calcium intake in childhood against stroke risk later in life, and a modest protective effect against mortality from any cause from higher intake of milk in childhood," said Dr. David L.

More and more seniors are being prescribed these medications for dementia and other conditions, the study authors noted in their report in the July 27 issue of Archives of Internal Medicine .

Previous research has shown that many people feel their moods shift with shifting skies, with more depression linked with less sunlight, but this is the first time that light exposure and cognition have been paired, stated the authors of a

To put that figure in perspective, the American Cancer Society estimates that all cancers combined cost our health care system $93 billion a year. So ending obesity would save our health care system 50 percent more dollars than curing cancer,"

The academy says parents don't have to worry that the condition will cause a deformity of the child's feet. Many children actually outgrow flexible flatfoot, the organization says.

Although still visibly shaken from my frightful ordeal, I continued staring at him. Suddenly, it seemed as if I were looking through different eyes than mine, as if new worlds were opening before me. I felt the presence of an

Freedom is not worth having if it does not include the freedom to make mistakes.

Divorce and widowhood have a lingering, detrimental impact on health, even after a person remarries, research at the University of Chicago and Johns Hopkins University shows."Among the currently married, those who have ever been divorced show worse health on all

When it comes to the health of a child, every decision a parent makes - before and after birth - can have long-term implications. Studies have shown that breastfeeding can boost a child's immune system, reduce the risk of infection,

More than 300 people have died from the new pandemic swine flu virus, U.S. health officials said on Friday, but they said the virus was so widespread they were ceasing the official count.The U.S. Centers for Disease Control and Prevention