Tag Archives: diet

Prostate cancer screening: More harm than good?

in.reuters.com

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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Healthy Snacks for Kids

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Healthy Snacks for Kids

In addition to their three regular meals, kids often get quite a few calories from the snacks they eat throughout the day.

Unfortunately, for too many kids, that means a lot of extra calories, sugar, and fat. In addition to increasing the risks of childhood obesity, snacks that aren’t healthy can put your kids at risk for cavities, especially if they are eating sticky foods like fruit snacks or candy.

Snacks can be a good part of your child’s diet, though, including low-calorie snacks and low-fat snacks like fresh fruit.

Healthy Snacks

In addition to fresh fruit, which are often high in fiber and vitamin C, low in fat, and have no added sugar, other healthy snacks that are quick and easy for kids to eat can include:

  • fresh fruit, such as apples, bananas, grapes, oranges, strawberries, watermelon, etc.
  • dried fruits, including raisins and prunes, although these are considered sticky foods that can put kids at increased risk for cavities, so consider having your kids brush and floss after eating
  • fruit cups or canned fruit in water, 100% fruit juice or light syrup
  • raw vegetables, including carrots, celery, or broccoli, that can be served with a low-fat dip or dressing
  • dairy products, such as low-fat cheese, yogurt, and pudding, or a homemade fruit smoothie
  • whole grain snacks, which can include some breakfast cereals, crackers, cereal bars, baked chips, and popcorn (without added butter), or pretzels
  • popsicles made with 100% fruit juice

Although not low in fat or calories, nuts and trail mix can also be considered a healthy snack from if a child is only given a single serving and it is not eaten on a daily basis.

What your child has to drink when he snacks can also be important. Many kids drink juice, tea, soda, or fruit drinks when they have their daily snack, which can greatly increase the amount of calories they are getting at snack time. Instead, limit your child to drinking water, low-fat or fat-free milk, and 100% fruit juice.

Unhealthy Snacks Habits

In addition to getting snacks with a lot of sugar and fat, getting too many snacks or snack serving sizes that are simply too large are habits that are unhealthy for kids.

You can avoid most unhealthy snack habits by:

  • not letting your kids eat unhealthy snacks, including high-fat snacks and high-calorie snacks, except as an occasional treat. These can include cookies, chips, candy, doughnuts, fruit drinks, soda, etc.
  • having a regular snack time for your kids — usually late morning and early afternoon for toddlers and preschoolers and just after-school for older kids. Keep in mind that most kids shouldn’t need a bedtime snack though.
  • having nutritious snacks handy and ready for your kids to eat
  • limiting snacks to just 100 to 150 calorie servings so that they don’t turn into an extra meal
  • not allowing snacks to be too close to lunch or dinner

If you do nothing else, at least monitor the serving size of your child’s snacks, especially if you give your child prepackaged snack foods. For example, if your child’s after-school snack consists of Oreo cookies, keep in mind that it takes just three Oreos to 160 calories and a lot of extra fat and sugar in his diet. And if he eats six or nine Oreo cookies, that quickly adds up to an extra meal — and not a very healthy meal.

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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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