天博体育

A new study published in The Journal of the American Medical Association finds that saw palmetto, a fruit extract commonly taken to treat urinary tract symptoms caused by an enlarged prostate (technically termed benign prostatic hyperplasia, or BPH), is no more effective in relieving symptoms than placebo, even at high doses. The federally funded study […]

For years, Dr. Anthony Komaroff has answered his patients’ questions one-on-one. With the launch of Ask Doctor K, a daily newspaper column that appears in 450 newspapers, he will be answering questions from people across the U.S and beyond via daily newspaper and the Internet (at AskDoctorK.com). Dr. Komaroff is a practicing physician, Professor of Medicine at Harvard Medical School, and Editor in Chief of 天博体育 Publishing. In the column, he will offer clear answers and straight advice to readers’ questions, talk about new treatments that are available today or will be soon, and focus on proven changes in lifestyle that can keep readers healthy, help them cope with chronic diseases, and improve their quality of life.

About 10% of women who have heart attacks seem to have clear, unblocked arteries. They don’t, really. Instead, they have a problem inside tiny arteries supplying the heart muscle, called microvessels. Traditional diagnostic tests can’t “see” into microvessels. In larger coronary arteries, the buildup of cholesterol-filled plaque creates distinct bulges that narrow the vessel at a particular spot, reducing blood flow. In microvessels, plaque uniformly coats the inner layer. This reduces the space for blood flow and makes the arteries stiff and less able to expand in response to exercise or other stress. Researchers are still trying to determine the best ways to diagnose and treat microvessel disease. Talking to cardiologists at Harvard-affiliated Brigham and Women’s Hospital, Dr. C. Noel Bairey Merz said that the erectile dysfunction drug Viagra (sildenafil), which was originally developed to improve blood flow to the heart, is being tested as one possible therapy.

Sometimes chronic tinnitus can be fixed by taking care of the underlying cause, like grinding your teeth at night or taking aspirin. Otherwise, one of the simplest approaches is masking the noise by listening to music or having a radio, fan, or white-noise machine going in the background. Some companies make devices worn like hearing aids that generate low-level white noise. Hearing experts often recommend masking before turning to more expensive options such as cognitive behavioral therapy, tinnitus retraining therapy, biofeedback and stress management, and transcutaneous electrical stimulation of parts of the inner ear.

Smokers who want to quit can turn to a nicotine replacement products, prescription medications, and counseling. What about the newest stop-smoking aid, the electronic cigarette? Despite its appeal, we don鈥檛 know enough about the safety or effectiveness of electronic cigarettes to give them the green light. Preliminary studies from the FDA, New Zealand, and Greece raise some concerns about the dose of nicotine delivered and potentially harmful chemicals that might be in the vapor. Until good studies have been done on electronic cigarettes, the best way to quit involves using nicotine replacement or a medication along with some sort of counseling or support, either in person, by telephone, or even by text message.

Gluten, an umbrella term for proteins found in wheat, rye, and barley, makes dough resilient and stretchy. Some people can’t eat foods made with these grains because gluten triggers an immune reaction and causes inflammation of the lining of the small intestine. This can eventually interfere with the absorption of nutrients from food. This condition, called celiac disease, can cause symptoms like gas, bloating, and abdominal cramps. A growing number of people who don’t have celiac disease suffer many of its symptoms. They are classified as “gluten sensitive” or “gluten intolerant.” A new Special Health Report from 天博体育 Publishing called “Food Allergy, Intolerance, and Sensitivity” covers how to cope with gluten sensitivity, lactose intolerance, and other food allergies and sensitivities.

Many people have trouble telling whether they are having heartburn or a heart attack. “Many people” includes doctors. A personal story from a Harvard physician describes how he treated himself with strong acid-suppressing pills until a near heart attack made him realize he had heart disease. His story appears in an updated Special Health Report from Harvard Medical School called “Heart Disease: A guide to preventing and treating coronary artery disease.”

Perfectionism has a dark side鈥攊t is often seen as obsessive and sometimes pathological. But it has a bright side, too. Desirable aspects of this personality trait include conscientiousness, endurance, satisfaction with life, and the ability to cope with adversity. This helps explain why some perfectionists become corporate leaders, skilled surgeons, or Olympic champions. In his new book, The Perfectionist’s Handbook, Dr. Jeff Szymanski describes how to become a better perfectionist鈥攂y building on the strengths of this quality and learning to minimize its drawbacks. A key step in becoming a better perfectionist is to learn how to turn mistakes into strategic experiments, says Szymanski, a clinical instructor of psychology at Harvard Medical School and executive director of the International OCD Foundation.

As summer winds to a close, many school age children are reluctant to greet another school year. Who can blame them? Swapping swimming, lazy days, camp activities, and late nights for classrooms, homework, and early morning bus rides isn’t much of a trade at all. For some children, reluctance turns into school refusal. This goes beyond an occasional “I hate school” or “I don’t want to go to school today.” Children with school refusal may sob, scream, or plead for hours before school in an attempt to stay home. They may often complain of illness and run home from school if forced to go. Absences can last weeks or even months. The problem may start at any point but common triggers are the start of a new school year, making the transition to a new school (middle school to high school, for example), or returning from school vacation. School refusal often stems from an anxiety disorder, according to Coping with Anxiety and Phobias, a new Special Health Report from Harvard Medical School. Helping a child through school refusal often takes concerted effort from the parents, school staff, a therapist, and the child.

When it comes to lowering cholesterol, a “portfolio” diet that includes cholesterol-lowering foods is better. In a head-to-head trial, the portfolio approach lowered harmful LDL by 13%, compared to a 3% reduction for a traditional low-fat diet. Elements of the portfolio diet included a daily handful of nuts; two teaspoons of margarine enriched with plant sterols; two servings of foods rich in soluble fiber, such as oatmeal, psyllium-enriched cereals, barley, and vegetables such as okra and eggplant; and two servings of soy-based foods, such as a glass of soy milk or a soy burger.

Millions of Americans鈥攎ost of them women鈥攕uffer from a bladder condition known as interstitial cystitis. According to a new study of this disorder, fewer than 10% of women with symptoms of interstitial cystitis are actually diagnosed with the disorder, even though it severely affects their lives. Without a proper diagnosis, women with interstitial cystitis are missing […]

Are you worried that certain rituals might be obsessive or compulsive? If they aren’t interfering with your ability to function, relax. It’s obsessive-compulsive disorder (OCD) only when obsessions and compulsive behavior become so severe that they interfere with your ability to work or have relationships. These behaviors help people with OCD deal with overwhelming feelings of anxiety that are usually triggered by intrusive images and thoughts, explains Dr. Jeff Szymanski, a clinical instructor in psychology at Harvard Medical School and author of The Perfectionist’s Handbook, which will be published in September. A combination of medications and psychotherapy can help many people with OCD live more balanced lives. A mainstay of treatment is called exposure and response prevention鈥攁 sort of “face your fears” therapy.

One way to experience happiness is to go with the “flow.” Flow is a state of intense absorption in which you lose awareness of time. It occurs when you strike the right balance between challenge and skill. It is also one of the elements that help create happiness. No matter what your natural tendency, recognizing how flow occurs (or doesn鈥檛) in your life and creating opportunities for more flow experiences can be a potent route to increased happiness. A new report from Harvard Medical School, called Positive Psychology, explores both time-tested and modern avenues to happiness, including flow, expressing gratitude, and developing self compassion.

Millions of people take nonsteroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen (Advil, Motrin and others), naproxen (Aleve, Naprosyn, and others), and celecoxib (Celebrex) to relieve pain and inflammation. During the last few years, researchers have raised concerns that taking these drugs often may be hard on the heart as well. The latest study, published in the July 2011 issue of the American Journal of Medicine, suggests that regular use of NSAIDs poses a special problem for people who already have heart disease, boosting their chances of having a heart attack or stroke. This research doesn’t mean that people with high blood pressure and heart disease should stop taking NSAIDs, especially if they are used to ease pain from a chronic condition like arthritis. But it may make sense to try an alternative first.

Is sunlight addictive? That provocative idea was raised by Dr. David Fisher, chief of dermatology at Massachusetts General Hospital in Boston, in a presentation at Harvard Medical School. He cited new evidence suggesting that being in the sun stimulates the so-called “pleasure center” in the brain and releases a rush of feel-good chemicals like endorphins, much as happens with addictive substances or activities. Why? Humans need vitamin D to survive. Once upon a time, it came mainly from skin鈥攕kin exposed to sunlight makes vitamin D. So the feelings of pleasure we get from sunlight may be part of a survival mechanism to get us the vitamin D we need.

Feeling tired? If so, it’s not surprising. Fatigue is one of the most common problems people report to their doctors. But fatigue is a symptom, not a disease. Different people experience it in different ways. The tiredness you feel at the end of a long day or after a time zone change might feel similar to that resulting from an illness. Fatigue from stress or lack of sleep usually subsides after a good night’s rest, while disease-related lethargy is more persistent and may be debilitating even after restful sleep. Either way, you don’t have to live with it. You can find out what is causing you to feel tired and discover what you can do to renew your energy levels.

Routinely checking smokers for early signs of lung cancer hasn’t translated into fewer deaths. New results from the National Lung Screening Trial indicate that yearly low-dose CT scans can reduce the death rate from lung cancer by 20%, which could save up to 30,000 lives a year. Despite the encouraging results, it is too early to recommend that heavy smokers immediately begin getting yearly CT scans for lung cancer. The physical, emotional, and monetary costs of saving these lives with yearly screening would be enormous. Researchers must look carefully at the financial and personal costs to determine who, if anyone, might benefit most from lung cancer screening.

A symposium on complementary and alternative medicine put on by Massachusetts General Hospital’s Mood and Anxiety Disorders Institute indicates that a handful of so-called natural supplements may be worth trying against depression and other mood disorders. The symposium focused on several for which there is good evidence. These include omega-3 fats, St. John’s wort, maca root, and valerian. Just because these remedies come from plants and animals doesn’t automatically mean they are safe. Herbal remedies have unwanted side effects and can interact with medications just like antidepressants and other drugs do. Talk with your doctor before trying any alternative approach, especially if you take any medications.

Johns Hopkins researchers found that 40% of hospital Web sites promote robot-assisted surgery, even though little evidence shows it鈥檚 better than conventional methods.

Patellofemoral pain syndrome, also known as runner’s knee, makes it painful to walk up and down stairs, get out of the car, and, of course, run. It happens when the kneecap doesn’t run smoothly up and down its track鈥攁 groove called the trochlea. Although anyone can get patellofemoral pain syndrome, it is more common in women than men鈥攅specially in mid-life women who’ve been running for many years. Strengthening the quadriceps (thigh) muscles and stretching the iliotibial band, connective tissue that runs from the knee to the hip, can help, as can cutting back on exercises or movements that put repetitive force on the knees.