Senin, 11 Mei 2009

Influenza — it’s not “just the flu.” How to protect yourself from this annual onslaught

Although most patients recover from a bout of the flu without treatment, thousands of Americans die from it each year. Influenza is a serious infection — but it can be prevented and treated, reports the October 2008 issue of Harvard Men's Health Watch.

In the United States, the flu season runs roughly from Thanksgiving to Easter. In a typical year, up to 10% of Americans get the flu, over 200,000 are sick enough to require hospitalization, and about 36,000 die from the infection. This toll can double during epidemics, which occur every 10 to 15 years.

The best way to avoid suffering flu symptoms this winter is an ounce of prevention, starting with good hygiene:

  • Wash your hands. Alcohol-based hand rubs and gels containing 60% to 95% isopropanol or ethanol are best, but ordinary soap and water will also help.
  • Keep your distance. The flu is most contagious within three feet of an infected person.
  • Wear a mask if you are in a high-risk group and you can’t avoid close contact with possible flu victims.
  • Don’t go to work or school if you have the flu.

Another preventive step is immunization, which can reduce your risk of catching the flu by up to 80%. Scientists must develop a new flu vaccine each year because the virus is always changing, so to prevent this year’s flu, you'll need a new shot. In the United States, October and November are the ideal months to get vaccinated. And if you’re late in getting your immunization this year, two medications can help prevent infection — talk to your doctor about your options. These medications can also ease flu symptoms, if you start taking them early in the illness.

Source: https://www.health.harvard.edu/press_releases/influenza-its-not-just-the-flu

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Minggu, 10 Mei 2009

7 tips for keeping your sinuses clear

More than 20 million Americans will have at least one bout of sinusitis this year. Blockage of the channels that drain the sinuses is the main cause of this painful condition. Keeping these channels open can reduce your chances of developing the problem, while restoring drainage if they become blocked is the key to treatment, reports the December 2008 issue of Harvard Men’s Health Watch.

Many people with sinusitis recover quickly and completely without taking antibiotics simply by promoting drainage. Harvard Men’s Health Watch offers the following tips:

  • Drink lots of water. Good hydration helps keep mucus loose.
  • Inhale steam three or four times a day. Boil water in a pan. Turn off the heat and bend over the pan with a towel over your head. to catch the steam. Breathe deeply through your nose.
  • Sleep with your head elevated.
  • Use decongestants. Tablets containing pseudoephedrine or phenylephrine are helpful, but beware that they may raise your blood pressure, speed your pulse, or make you jittery.
  • Avoid antihistamines. They’re fine for allergies or a watery nose, but they make mucus thick and hard to drain—the last thing you want for sinusitis.
  • Use a saline (salt water) nasal spray to loosen mucus and rinse your sinuses.
  • A warm compress on your face may soothe sinus pain. Over-the-counter pain relievers such as aspirin or acetaminophen will help reduce pain and fever.

Antibiotics aren't the first step in treatment. Good as they are, they have potential disadvantages. They can trigger allergic reactions or cause side effects. Most people recover fully without antibiotics, but if your sinusitis is very severe or does not improve with two to four days of drainage therapy, ask your doctor if you should take an antibiotic.

Source: https://www.health.harvard.edu/press_releases/7-tips-for-keeping-your-sinuses-clear
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Exercise helps heal the heart and the mind

Mind and body are really two halves of the same whole. Each profoundly influences the other. Depression and heart disease are a good example of this duality. People who are depressed are more likely to develop heart disease than people who aren’t depressed, and those who have heart disease are more likely to fall into depression. But it is possible to exploit this two-way street and simultaneously heal the mind and the heart, reports the February 2009 issue of the Harvard Heart Letter.

Depression isn’t just in the mind. It causes a host of physical changes that can lead to heart trouble. It increases inflammation, which is involved in artery-clogging atherosclerosis and the rupture of plaque. It boosts the production of stress hormones, which dull the response of the heart and arteries. It activates blood platelets, making them more likely to form clots in the bloodstream.

Behavioral changes wrought by depression may be even more important. People who are depressed find it hard to exercise, to pay attention to what they are eating, and to take medicines needed to protect the heart.

Depression isn’t a passing phase. Trying to “get through” depression by slogging onward is like trying to “get over” diabetes. Fortunately, a variety of treatments—especially exercise—can fight depression. The Harvard Heart Letter notes that a regular exercise program can improve mood even as it strengthens the heart by releasing mood-altering chemicals in the brain, improving the supply of energy and oxygen to the brain, spurring the growth of new nerve cells in the brain, and reinforcing connections between existing nerves.

Source: https://www.health.harvard.edu/press_releases/Exercise-helps-heal-the-heart-and-the-mind

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Fix bad walking habits before you injure yourself

For healthy adults, walking is so automatic that it’s impossible to remember having learned how to do it. Yet it’s easy to pick up a few bad habits along the way that make our walks less efficient—and maybe even injurious. The good news is that even patterns established over a lifetime can be reversed, reports the February issue of the Harvard Health Letter.

Ideally, by adulthood a person will walk with head erect, back straight, arms bent, knees extending and flexing, and feet striking the ground with the heel and pushing off with the toes. Our upper bodies also get into the act. Unfortunately, few of us achieve the ideal gait, and fewer still maintain it. Over time, we may lower our heads and thrust our trunks forward. Instead of swinging, our arms may dangle listlessly at our sides.

Bad habits aren’t the only reason our gaits go awry. A variety of health conditions can throw us off stride, too. Arthritis is perhaps the most common. Good reflexes, healthy joints, strong muscles, and the vestibular system in the ear, which gives us a sense of spatial positioning, all play a role in keeping us upright. Take away any of them, and our balance suffers.

Here are some tips to correct bad walking habits:

Look ahead. Train your sights 10 to 20 feet ahead of you. If you need to check the ground to avoid obstacles, lower your eyes, not your head.

Stretch your spine. Your shoulders should be level and square. Tuck your buttocks in.

Bend your arms. Flex your elbows at close to 90-degree angles and let your arms swing at waist level.

Take measured steps. Too long a stride throws you off balance. Concentrate on taking shorter steps, but more of them.

Source: https://www.health.harvard.edu/press_releases/Fix-bad-walking-habits-before-you-injure-yourself

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Best steps you can take to prevent Alzheimer's

Several drugs aimed at clearing amyloid deposits from the brain—which investigators had hoped would reverse the symptoms of Alzheimer’s disease—have failed in late-stage testing. Reports on tests of other interventions to prevent or slow Alzheimer’s have also been discouraging: statins, vitamin supplements, and ginkgo biloba have failed to provide any benefit. It now appears that remaining mentally and physically fit are the best options for preventing—or at least delaying—Alzheimer’s from developing in the first place, reports the February issue of the Harvard Mental Health Letter.

For example, a study published in November 2008 provided evidence that cognitive reserve—an attribute encompassing thinking and memory abilities—may help delay Alzheimer’s symptoms. It’s not clear why, but people with more cognitive reserve may be able to compensate for any thinking deficits by using other parts of their brains. Researchers were surprised that when they compared people with the same extent of amyloid plaque, those with more education scored better on overall cognitive function than those with less education. Thus, education may create a cognitive reserve that raises the threshold for Alzheimer’s disease.

Two studies published in 2008 add to the evidence that overall cardiovascular fitness may help delay cognitive decline—possibly by keeping blood vessels healthy or by increasing blood flow to the brain. The Rush Memory and Aging Project found that the more active people were on a daily basis, the better they performed on tests of cognitive function. Likewise, the Fitness for the Aging Brain Study found that people who exercised regularly scored better on tests of cognitive function and memory than those who did not.

Dr. Michael Miller, editor in chief of the Harvard Mental Health Letter, notes that achieving modest gains—particularly by remaining mentally and physically active—is the best option.

Source: https://www.health.harvard.edu/press_releases/Best-steps-you-can-take-to-prevent-Alzheimers

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Beyond the scale: how to measure whether you’re fat or not

Most of us have our private ways of assessing how fat we are. We feel our pants getting snug—or loose, if we’re lucky. But there are more objective ways to answer the question. The January 2009 issue of the Harvard Health Letter provides a guide to three measures of fatness.

Body mass index, or BMI, is computed by taking your weight in kilograms and dividing it by the square of your height in meters. The BMI is easy to calculate, and in most people, it correlates reasonably well with overall body fat. It’s also a good measure of health risk: as a rule, when BMIs go up, so do deaths, particularly from cardiovascular disease. But BMI doesn’t distinguish whether the pounds are from fat or from fat-free tissue like muscle and bone. BMI also doesn’t tell us about the type of fat we’re carrying—a significant shortcoming, as the type of fat that builds up in the abdomen is believed to be particularly unhealthful.

Waist measurement puts a different spin on obesity: it’s no longer about weight or total body fat, but about the metabolically active fat that collects around the organs in our abdomens. Waist circumference is a better predictor of diabetes than BMI and a good indicator of heart disease risk. Measuring it identifies the sizable group of people who pass muster when it comes to BMI but whose large waists put them at higher risk. Still, waist measurement hasn’t become part of routine medical practice for several reasons. For one thing, there’s some uncertainty about exactly where the waist should be measured, although navel-level is widely accepted. Moreover, the definition of too large a waist may need revision: some studies show that health risks start well before the current cutoffs of 40 inches for men and 35 inches for women. Finally, given all the other information that’s collected on patients—blood pressure, cholesterol levels, BMI—it’s not certain that adding a waist measurement to the mix would affect treatment decisions.

The waist-to-hip ratio (WHR) is a simple calculation: waist circumference divided by hip circumference. A small waist combined with big hips yields a smaller number than a big waist with small hips—and smaller is better when it comes to WHR. For women, the risk for heart disease, stroke, and other health problems starts to climb at a ratio of about 0.85, so that is often set as the cutoff for a “good” ratio. For men, the cutoff seems to be about 0.90. Waist circumference has eclipsed WHR, but the WHR may be ready for a comeback. Research shows that WHR is more strongly associated with heart disease than waist circumference alone. By taking hip circumference into account, the ratio is more sensitive to the difference between dangerous abdominal fat and the less harmful layer of fat we carry under the skin throughout the body.

Source: https://www.health.harvard.edu/press_releases/beyond-the-scale-how-to-measure-whether-youre-fat-or-not

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12 ways to cut health care costs

How you can rein in health care bills — yours and society's.

Our carbon footprints are calculations of the greenhouse gases we're individually responsible for. Reduce yours, and you can take some satisfaction in having done something, however small, to reduce emissions and slow global warming.

Now might be a good time to start thinking about our health care footprints. Reforming health care and extending medical insurance to all Americans have become national priorities, despite — or maybe because of — the weak economy. But those efforts are likely to founder unless spending on health care is brought under control.

Serious reform and belt tightening can't happen without new policies from Washington, but individual responsibility and action can both set an example and make a contribution. It all adds up. Besides, even people with good health coverage are paying a larger fraction of their health care bills these days, in the form of co-pays, deductibles, and other out-of-pocket expenses. There's a direct personal interest in reining in costs, not just a societal one.

We polled our editorial board to get some ideas about what people might do as individuals about health care spending. Dr. Soheyla Gharib suggested the term health care footprint to us. Here are a dozen suggestions for making yours a bit smaller:

1. Develop a good working relationship with a primary care physician. A primary care doctor who knows you, your medical history, and your circumstances stands a much better chance than a relative stranger of making decisions and giving you advice that will keep you healthy, out of the hospital, and in no need of specialized medical care. She or he can take care of you in context. The catch is that primary care physicians are in short supply. And primary care may be evolving into more of an ensemble approach, with the physician being the head of a large supporting cast. In a few years, the relationship you have with the physician may be less primary than, say, the one you have with the health coach — someone who works with the physician and whose job it is to cajole, remind, and motivate people to take better care of themselves.

2. Don't use the emergency department unless absolutely necessary. Call your doctor or his service and try to get some advice over the phone — or, better yet, in person. Emergency care is fantastically expensive partly because the doctors and nurses often need to order a lot of tests so they can make diagnostic and treatment decisions quickly.

3. Get — and stick — with the program. Most of American health care these days is devoted to treating chronic conditions — like arthritis, diabetes, heart disease, and high blood pressure — and to care at the end of life (see #11). Taking medications as prescribed, getting regular check-ups (regular eye examinations if you have diabetes, for example), and adhering to lifestyle changes can keep those diseases under control at relatively (we stress relatively) modest cost.

4. Don't go directly to a specialist without checking with your primary care doctor, even if your insurance allows it. Medical care is increasingly specialized, but as much as possible, you should let your primary care physician coordinate that care. If she or he doesn't know what's going on, it can lead to wasteful — and possibly harmful — overtesting and duplication of treatments.

5. Ignore the drug ads. The heyday of pharmaceutical advertising may be winding down (remember the Dorothy Hamill Vioxx ads?), but there are still plenty of slick direct-to-consumer come-ons being broadcast and published. New drugs may have real advantages over older ones, but the virtues of the old standbys, which don't have big ad budgets behind them, often get overlooked. Older drugs are frequently just as effective (if not more so) and safer — and almost certainly cheaper.

6. Go generic. Spending on pharmaceuticals has slowed down, in large part because of competition from generic drugs, which cost less than their brand-name equivalents. Most insurers have higher co-pays for brand-name drugs, so using generic medications can mean a cost savings both for you and for the health care system. But check with your doctor and your pharmacist about what's available as a generic. It can be confusing. For example, there's a generic form of mupirocin ointment, but as a cream, the antibiotic is available only as brand-name Bactroban. We've posted a list of other examples of this kind of inconsistency on our Web site at www.health.harvard.edu/health.

7. Fight inertia. If you're taking a medication, discuss with your physician how long you've been taking it, whether it's working, and if it isn't, not taking it anymore. Many people take medications for years without knowing if they are helping in any way. Antihistamines, nasal steroid sprays, and antireflux medications are prime candidates for this sort of pharmacological inertia. You can avoid this problem by talking to your doctor about a trial period when you start a drug. Get some instructions about signs that would show if the drug is working, and see the doctor if it's not.

8. Screen the screening tests. Screening tests can save lives by catching a disease at an early, more treatable stage. But a screening test can also cause a lot of mischief: false alarms, a false sense of security if a disease is missed, and unnecessary diagnostic testing and treatment. There are more doubts about some well-established screening tests than many people realize. For example, many men believe they must get the prostate-specific antigen (PSA) test for prostate cancer. Not so, say the federal government's prevention guidelines, which characterize the evidence as insufficient to recommend PSA testing. And in 2008 the guidelines were revised to say men ages 75 and older shouldn't get a PSA test. These are just guidelines: men need to discuss the pros and cons of PSA testing with their doctor — with the clear understanding that they are entering a gray area.

9. Question the need for expensive tests. Don't push to get new, expensive tests just because you think new is better. And if a doctor orders an expensive test like an MRI or CT scan, you can ask why it's necessary and how it will make a difference. The number of imaging tests being done in the United States has exploded and by some reckonings, almost a third of them are unnecessary. Some tests, like CT scans to evaluate coronary artery disease, are being debated because it's unclear how much they really add to standard tests. Health care experts Ezekiel Emanuel and Victor Fuchs have pointed out that the hospitalization rate in the United States is actually lower than in many European countries. We also go to the doctor less often on a per capita basis. It's the expensive inputs into our health care — all the drugs, tests, high-tech treatments, highly compensated specialists — that drive up the collective medical bill, not so much the volume.

10. Wait, and it may go away. Often it's critically important to get medical care straightaway. Prompt treatment of a heart attack or stroke can save your life or prevent devastating disability. But people frequently get tests and treatments for aches, pains, and other discomforts that might have gone away on their own because the illness-producing stress of work or school lets up, for example, or the immune system fights off the infection. If you are feeling sick, by all means get evaluated, but if your doctor suggests the test of time, take the test.

11. Discuss end-of-life issues with your family and physicians. Medical care near the end of life is a big-ticket item. Roughly a fifth of the money that Americans spend on health care goes for care in the last year of life. Living wills and advance directives don't necessarily save money — people sometimes want more care, not less, as they become more frail — but they may help. And so may talking about your preferences. A study published in The Journal of the American Medical Association in 2008 found that cancer patients who had discussed end-of-life care with their physicians received hospice care sooner and had lower rates of ventilation, resuscitation, and admission to an intensive care unit. Because they talked to their physicians, these people were treated the way they wanted to be and avoided a waste of precious resources.

12. Stay healthy! Not needing health care is perhaps the surest way of spending less money on it, both yours and society's. So don't smoke and get help quitting if you do. A good diet (replacing refined starches with whole grains and lots of fruit and vegetables) will lower your cardiovascular risks. Exercise helps with — well, you name it. Sleep is fast becoming the third pillar of wellness. Studies have shown that averaging eight hours a night may prevent colds and keep arteries open.

Source: https://www.health.harvard.edu/newsletters/Harvard_Health_Letter/2009/March/12-ways-to-cut-health-care-costs

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