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Only 10 percent of U.S. adults have low heart risk

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Only 10 percent of U.S. adults have low heart risk

Ninety percent of American adults have at least one risk factor for heart disease, researchers reported on Monday.

Virtually all Americans either have high blood pressure, high cholesterol, high blood sugar, are overweight, smoke or exercise too little, the team led by the Centers for Disease Control and Prevention reported.

“Unfortunately, the limited strides that were made toward this goal during the 1970s and 1980s were eroded by the increases in excess weight, diabetes and hypertension during more recent decades,” the CDC’s Dr. Earl Ford, who led the study, said in a statement.

Ford’s team looked at four national studies covering tens of thousands of Americans aged 25 to 74.

Only 10 percent had low risk scores in all five categories, they reported in the journal Circulation.

“Until the early 90s, we were moving in a positive direction, but then it took a turn and we’re headed in a negative direction,” said Ford.

“When you look at the individual factors, tobacco use is still headed in the right direction and so are cholesterol levels, although that has leveled off. The problem is that blood pressure, BMI (body mass index, a measure of obesity) and diabetes are all headed in the wrong direction.”

Heart disease is the No. 1 killer in the United States and many other countries.

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H1N1 flu causes unusual damage to lungs: studies

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H1N1 flu causes unusual damage to lungs: studies

The new pandemic H1N1 flu may cause blood clots and other unusual damage in the lungs and doctors need to be on the lookout, U.S. researchers reported on Thursday.

Two studies published in the American Journal of Roentgenology show the need to check X-rays and CT scans for unusual features, and also point out swine flu can be tricky to diagnose in some of the sickest patients.

H1N1 flu is causing a pandemic, and while it is not particularly deadly, it is sickening many younger adults and older children who usually escape the worst effects of seasonal flu.

“It is therefore essential that clinicians be able to recognize possible cases of pandemic H1N1 influenza in high-risk groups so that they order the appropriate diagnostic tests, begin specific antiviral therapy, and prepare to provide intensive supportive measures as needed,” Dr. Daniel Mollura of the National Institutes of Health Clinical Center in Maryland and colleagues wrote.

One middle-aged man who died was not diagnosed until after death, but unusual findings on his X-rays may be able to help doctors save other, similar patients.

Mollura’s team found irregularities called ground-glass opacities in the patient’s lungs using a CT scan. Although the patient was severely ill and had a fever, he tested negative for flu and doctors did not treat him for it.

The man died five days after he went into the hospital and the autopsy confirmed he had swine flu. The lung lesions seen on his CT scan matched lung damage done by the virus, Mollura and colleagues said.

In another study in the same journal, CT scans of patients with severe cases of swine flu showed many had pulmonary emboli, which block the arteries in the lungs, a team at the University of Michigan found.

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stress quick treatment for H1N1

stress quick treatment for H1N1

Patients who have flu-like symptoms and are having trouble breathing should get quick treatment with the antiviral drugs Tamiflu or Relenza, even before getting a flu test, U.S. officials said on Tuesday.

And doctors should consider setting up a system so that patients most likely to become severely ill from H1N1 swine flu have a prescription on hand so they can just call up to get the go-ahead to take the drugs if they develop symptoms, the U.S. Centers for Disease Control and Prevention said.

“Treatment should not wait for laboratory confirmation of influenza because laboratory testing can delay treatment and because a negative rapid test for influenza does not rule out influenza,” the CDC says in updated guidelines, available here

“The very young and very old, people with chronic medical conditions and pregnant women in general ought to be treated with antivirals when they have an influenza-like illness,” the CDC’s Dr. Anne Schuchat told reporters.

But most people will not need any treatment at all for H1N1 because most of those infected so far have recovered on their own. “They can be cared for with mom’s chicken soup at home, lots of fluids and rest,” Schuchat said.

The latest guidance suggests officials are keen to make sure people who need it get very quick treatment, while making sure people who do not need the drugs do not abuse them.

Both GlaxoSmithKline’s Relenza and Roche AG’s Tamiflu can help save the lives of patients severely ill with any influenza, if given within a day or so of symptoms starting. They can also ease the misery of milder cases and even prevent flu if people take it just after exposure.

But supplies are not infinite and health officials worry that the more people take them, the quicker the virus will evolve resistance, rendering them useless. Two older flu drugs, amantadine and rimantadine, are already useless against seasonal flu.

The CDC is clear that some people should take the drugs prophylactically — to prevent infection. That includes some healthcare workers and people with high-risk conditions such as asthma who know they were in close contact with an infected person.

But the new guidance adds an option to watch and see if the person gets a fever. “Instead of the preventive use of antivirals, clinicians may consider watchful waiting,” Schuchat said.

A vaccine against H1N1 swine flu is being tested but will not be available until mid-October. The CDC recommends that about 160 million people line up for the first doses starting then.

“Virtually all the influenza circulating now in the United States is the 2009 H1N1 strain,” Schuchat said. It has not mutated and the vaccine is still a good match, she said.

She said only a handful of cases of resistance to Tamiflu, known generically as oseltamivir, have been reported.

In the United States, 24 elementary, middle or high schools closed because of H1N1 outbreaks last week, letting 25,000 students out of class. The CDC advises against closing schools unless so many students or staff become ill that the school is overwhelmed.

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