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IBD: The Disease No One Talks About
Why Americans aren't getting help for a chronic condition that's painful, limiting and can ruin their sex life. By Amy Zintl
Q: What medical disorder affects 30 million people, yet is so
embarrassing that two thirds of sufferers don't tell their
Doctors?
A• Irritable bowel syndrome or lBS, a condition that causes debilitating abdominal pain and bowel dysfunction. Many of the people who have it-70 percent of whom are women-say they decline social invitations, pass up job opportunities and limit travel because of their condition. In fact, IBS is a leading cause of absenteeism from work, second only to the common cold.
In February 2000, many women finally found relief from their symptoms with Lotronex, the first drug for IBS approved by the FDA in two decades. Since then, Lotronex, approved only for women with diarrhea-predominant lBS, has led to 54 hospitalizations, 21 surgical procedures and at least four deaths. Those alarming findings prompted the FDA to recommend strict rules for dispensing the drug, which would allow only gastroenterologists certified by the manufacturer, GlaxoSmithKlein, to prescribe Lotronex. Rather than meet those regulations, Glaxo decided to pull it from the market in November, leaving thousands of patients without other treatment options. But there may be a silver lining-advances in lBS research that resulted in the development of Lotronex, may help experts develop safer, more effective therapies.
The hidden cause of lBS
Mysteriously, the colon of an IBS patient shows no signs of disease, inflammation or infection. But the nerves that line the colon are unusually sensitive to stimuli such as food and gas, causing irregular muscle activity and painful spasms that lead to chronic constipation, diarrhea or other symptoms, including bloating, fatigue, backache and headache. That's why experts now believe that lBS is more of a disorder of the nervous system than one of the stomach or colon.
The exact cause of this hypersensitivity remains elusive. In women, hormones may play a role, since many women report more severe symptoms during the first days of their period.
One theory is that for some, lBS may be an aftereffect of a previous gastrointestinal infection. "It's possible that a virus or parasite caused an infection that in some way damaged the nerves that line the colon," says gastroenterologist Susan Lucak, M.D., assistant professor of clinical medicine at the College of Physicians and Surgeons at Columbia University, in New York City. Other theories suggest that a stressful or traumatic event may trigger the disease, since lBS has been associated with physical and even sexual abuse. However, lBS is a biological condition. While symptoms often worsen in times of stress, anxiety or depression, don't let anyone tell you it's all in your head.
Warning signs for women
Unfortunately for women, lBS symptoms may be mistaken for gynecological problems. "The hypersensitivity isn't just in the bowel," says Margaret Heitkemper, R.N., Ph.D., a professor in the School of Medicine and the School of Nursing at the University of Washington, in Seattle. "As many as fifty percent of women with IBS also suffer from painful periods, PMS, fibromyalgia and headaches." More alarming, women with IBS have a higher rate of hysterectomies, appendectomies and cholecystectomies (gallbladder removal). "Some women's conditions are misdiagnosed," says Lucak. "They have surgery, yet still have pain. Then they finally are diagnosed with lBS."
Those who seek medical care for lBS tend to be between the ages of 20 and 40. But getting a diagnosis can be difficult: A recent survey found that it took an average of three years and three doctors to arrive at an IBS diagnosis. If you suspect you might have the disorder, ask your doctor if he's familiar with it or if he will refer you to a gastroenterologist who is. Another survey found that only 15 percent of primary-care physicians and 60 percent of gastroenterologists knew the guidelines used to diagnose lBS. A doctor experienced with lBS will try to rule out any other medical conditions by performing a few tests before making a definitive diagnosis.
New treatment options
Although there's no cure for lBS, the good news is that it doesn't lead to more serious conditions such as cancer-- and lifestyle changes can make a difference. Eating a low-fat, high-fiber diet, cutting back on dairy products, exercising regularly and reducing stress may ease symptoms. For constipation-predominant patients, taking laxatives and increasing fiber intake may alleviate symptoms, while antidiarrheals and antispasmodics are often prescribed for diarrhea-predominant patients.
Experts now suspect that serotonin, a hormone that's known for its mood-boosting effects in the brain, may play an important role in stimulating the nerves in the colon. (Ninety-five percent of the body's serotonin is produced in the intestines, only 5 percent in the brain.) That could be why some patients have found pain relief by taking small doses of antidepressants, which reduce sensitivity of nerves in the bowel. "But even at low doses, these drugs may have side effects, such as weight gain and sexual problems," says Lucak.
By targeting a drug's effects on the colon, however, new medications may work without side effects. Lotronex was the first drug to block serotonin through a receptor site in the colon called 5-HT3, thereby reducing bowel sensitivity and decreasing diarrhea urgency and pain. While experts debate whether Lotronex will make a comeback, they hope that other 5-HT3 blockers will be developed.
In the meantime, drugs that affect a different receptor site are being studied. One mimics the effect of serotonin through the 5-HT4 receptor site to stimulate bowel function and relieve constipation. Called tegaserod, it is also drawing controversy because it may be associated with the formation of ovarian cysts. It could be on the market as early as summer.
Until these drugs are available, patients can only control, but not treat, their condition. A recent survey found nearly a third have tried stress-reduction techniques or alternative medicine, with varying degrees of success. While large-scale research of herbals and lBS has yet to be done, some smaller studies show promise.
Despite the absence of a cure, doctors urge people with lBS symptoms to put aside their embarrassment and seek care, since this might prevent a mild case of lBS from becoming more severe. "Women need to know what they have and what their options are," says gastroenterologist Lin Chang, M.D., associate professor of medicine at UCLA School of Medicine. "They don't have to suffer in silence."
Amy Zintl, Ladies' Home Journal, June 2001
The emphasis in the above article are those of the webmaster.
Latest Update: A simple 10 day course of antibiotics can reduce or even eliminate symptoms of Irritable Bowel Syndrome. This breakthrough research was done at Cedars-Sinai Medical Center in Los Angeles. Researchers found that an excessive buildup of bacteria in the small intestine is the cause of the ailment, and that antibiotics can zap those germs.
"This is the first study to demonstrate that complete eradication of small intestinal bacterial overgrowth improves the symptoms of IBS -- especially bloating, diarrhea and abdominal pain," said Dr. Henry C. Lin, director of the Cedars-Sinai GI Motility Program.
A 10 day course of common antibiotics like Flagyl or Vibramycin, reduced levels of small intestinal bacteria overgrowth and provided dramatic relief.
That's all for now folks, more to come later.
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