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Prostate cancer screening: More harm than good?

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Prostate cancer screening: More harm than good?

One meaning of screening is the investigation of a great number of something (for instance, people) looking for those with a particular problem or feature. For example at an airport many bags are screened by x-ray to try to detect any which may contain weapons or explosives, and people are screened by passing through a metal detector. If only part of a population is screened, screening is equivalent to sampling in statistics.

Screening can also mean preventing access of something by some sort of barrier. Particular cases:

Electromagnetic shielding in physics, the exclusion of electric, magnetic, or electromagnetic fields by a metallic screen or shield

In atomic physics and chemistry, the screening effect or atomic shielding is the reduction of effective nuclearcharge by intervening electron shells

Screening (printing), a process that represents lighter shades as tiny dots, rather than solid areas, of ink by passing ink through a perforated screen

The investigation of a large population is related; the members of a population are filtered by a metaphorical, rather than physical, screen

Screening is a process stage when cleaning paper pulp

Routine screening for prostate cancer has resulted in more than 1 million U.S. men being diagnosed with tumors who might otherwise have suffered no ill effects from them, U.S. researchers said on Monday.

They said prostate cancer screening is a double-edged sword, catching serious cancers in a few but causing needless worry and expense for the majority of men, who may be getting treatment for tumors growing too slowly to do any harm.

The team looked to see how many additional men have been diagnosed with prostate cancer since the introduction in 1986 of a widely used blood test for prostate cancer that looked for a prostate-cancer specific antigen, or PSA.

“Our estimate is that number is about 1.3 million people in the United States. That is a huge effect,” said Dr. H. Gilbert Welch of the VA Outcomes Group in White River Junction, Vermont, whose study appears in the Journal of the National Cancer Institute.

More than 1 million of those were treated, they found.

“These are men who could not be helped by treatment because their cancer was not destined to cause them symptoms or death,” Welch said in a telephone interview.

The increased diagnosis rate more than tripled in men aged 50 to 59 and increased more than a sevenfold in men under age 50.

And while prostate cancer deaths have declined since the introduction of PSA testing, Welch said about 20 men had to be diagnosed and treated for every one who benefited.

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The Pregnant Woman’s Guide to the Gym

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The Pregnant Woman’s Guide to the Gym

A an hour of cardio usually flies by for me at the gym, thanks to my secret motivational strategy: watching “Law & Order” reruns on the club’s TV. I hop on the elliptical machine as the opening credits roll, and before I know it, Sam Waterston is finishing his closing argument to the jury.

At least, that was the case before I got pregnant. In my first trimester, some days, to my amazement, I’d poop out 10 minutes into the show—before the detectives even identified the body.

“Many active women are surprised at how pregnancy affects their workouts,” says Renee M. Jeffreys, M.Sc., a prenatal-fitness consultant in Milford, Conn., and co-author of Fit to Deliver (Hartley & Marks). “But remember that these are normal, short-term changes.”

So should you dial down your cardio? Are certain machines off-limits? Can you still do Pilates? The answers depend largely on what your fitness level is, which trimester you’re in and how you’re feeling, Jeffreys says. But this much is certain: The gym is a great place to be pregnant. If one cardio machine or strength exercise isn’t comfortable, there’s always another one to try.

Getting yourself to the gym may take an extra dose of motivation, but the payoff is huge. Consistent exercise during pregnancy can minimize aches and constipation, help you sleep better, and lower your risk of gestational diabetes and depression. You may even end up having a shorter, less complicated labor. Developing good workout habits during pregnancy will help you get your body back faster after delivery too.

Though my first trimester was rough going, my second was a breeze, and my third wasn’t half bad, either. With my stamina back, I’d usually make it all the way through “Law & Order” at the gym—except, I’d spend the commercial breaks in the bathroom.

Whether you take classes, work out in the cardio room or lift weights, everything changes when you’re pregnant. Here’s how to adapt.

Class Action

If you have access to prenatal exercise classes, sign up. Not only are the workouts modified for pregnancy, but you also get to bond with your fellow moms-to-be over charming symptoms such as heartburn, swollen feet and hemorrhoids. You might even get labor tips.

If your favorite classes don’t come in the prenatal variety, it’s fine to keep going, as long as you pay attention to how your body feels, limit your intensity and stay within the normal range of motion. Just make sure the instructor knows you’re pregnant and is knowledgeable about modifications you can make, Jeffreys advises. If your instructor hasn’t worked with pregnant women, find one who has. Keep in mind that highly choreographed classes like Step aren’t the best choices for expectant women since they require quick direction changes and a heightened sense of balance. Hereare the most common classes you’ll find at the gym and what you need to know about benefitting from them whilepregnant.

Pilates Pilates helps maintain your abdominal muscle tone, which will support your growing belly, minimize back pain and give you more oomph for pushing during labor. But mat classes can be problematic after the first trimester because so much work is done lying on your back. Either opt out of these exercises or use an angled foam spine support (found in most Pilates studios but not many gyms); this will keep your head higher than your belly. You can still do the side-lying leg work, upper-body exercises and stretches.

Yoga Yoga not only strengthens your core and improves flexibility, but with its gentle movements and emphasis on breathing and meditation, it also fosters a sense of calm. In the second half of your pregnancy, avoid exaggerated twists and movements that tug on your belly, moves that require you to lie on your back or belly for prolonged periods, and inversions like headstands and shoulder stands.

Water aerobics Ah … relief. You can’t trip and fall; you won’t overheat; and for once you won’t feel like a big clod. No wonder water aerobics is a third-trimester favorite. Your joints will thank you! Wear aqua shoes so you don’t slip on the bottom of the pool.

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CDC H1N1 (Swine Flu) Response Actions and Goals

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CDC H1N1 (Swine Flu) Response Actions and Goals

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This podcast discusses the actions and goals of the Centers for Disease Control and Prevention, related to the current outbreak of H1N1 flu (swine flu).

WHO’s decision to raise the pandemic alert level to Phase 6 is a reflection of the spread of the virus, not the severity of illness caused by the virus. It’s uncertain at this time how serious or severe this novel H1N1 pandemic will be in terms of how many people infected will develop serious complications or die from novel H1N1 infection. Experience with this virus so far is limited and influenza is unpredictable. However, because novel H1N1 is a new virus, many people may have little or no immunity against it, and illness may be more severe and widespread as a result. In addition, currently there is no vaccine to protect against novel H1N1 virus.

In the United States, most people who have become ill with the newly declared pandemic virus have recovered without requiring medical treatment, however, CDC anticipates that there will be more cases, more hospitalizations and more deaths associated with this pandemic in the coming days and weeks. In addition, this virus could cause significant illness with associated hospitalizations and deaths in the fall and winter during the U.S. influenza season.

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