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Just in time for Halloween, the Food and Drug Administration (FDA) is warning people away from eating too much black licorice.
For adults age 40 or older, the FDA says, eating 2 ounces of black licorice a day for at least two weeks may lead to arrhythmia, or irregular heart rhythm, which could land you in the emergency room.
The culprit is glycyrrhizin, a sweetening compound derived from licorice root. In large amounts, glycyrrhizin can cause the body's potassium levels to drop, which in turn, may lead to abnormal heartbeat and high blood pressure. It can also cause water retention and swelling, which is a particular risk for people with congestive heart failure.
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This isn't exactly a widespread risk — the FDA says that the agency received one report of a black licorice-related problem last year — but studies in several medical journals have linked the candy to health problems in people over 40 (some with a history of heart disease or high blood pressure).
The good news is that your potassium levels go right back to normal once you stop eating black licorice, with no permanent health effects. And if you like the taste, you'll be glad to know that many licorice-flavored products don't actually contain any real licorice; they're usually flavored with anise oil instead.
Also, although licorice root has long been used as a folk remedy in many cultures — it's purported to treat heartburn, stomach ulcers, sore throat, cough and even some viral infections — there's no evidence that it has any such health benefits, the FDA reports.
Black licorice can interfere with some medications, however, such as heart drugs and birth control pills, as well as some herbs and dietary supplements, so the FDA advises consumers to check with their doctor, if they have concerns.
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"No matter what your age, don't eat large amounts of black licorice at one time," the FDA says. If you have been eating a lot of it and have an irregular heart rhythm or muscle weakness, stop eating it immediately and call your doctor.
Sora Song is the health editor at TIME. Find her on Twitter @sora_song. You can also continue the discussion on TIME's Facebook page and on Twitter at @TIME.
CHICAGO (AP) — The nation's worst hospitals treat twice the proportion of elderly black patients and poor patients than the best hospitals, and their patients are more likely to die of heart attacks and pneumonia, new research shows.Now, these hospitals, mostly in the South, may be at higher risk of financial failure, too. That's because the nation's new health care law punishes bad care by withholding some money, says the lead author of the study published Wednesday in the journal Health Affairs."These hospitals are going to have a much harder time in the new funding environment," said Dr. Ashish Jha of the Harvard School of Public Health, who led the study. "I worry they're going to get worse over time and possibly even fail. I worry that we're going to see a bunch of that happening over the next three to five years."Under the Affordable Care Act, hospitals that fail to improve will see their Medicare payments shrink by 1 percent starting October 2012. That could jeopardize some hospitals already on the brink of closure, Jha said.That unintended consequence of the health overhaul could increase health disparities for minorities, Jha said."We have to make sure we pay attention to what the results of those policies are and be ready to change directions if they're causing harm in the marketplace," Jha said.The study doesn't name the 178 hospitals the researchers rated as "worst" because of their low quality of care and high costs. A data use agreement with Medicare prevented the researchers from identifying the hospitals publicly.The study, funded by the Commonwealth Fund, found 122 "best" hospitals with high quality and low costs. Those best hospitals were more likely to be in the Northeast, to be nonprofit and to have cardiac intensive care units compared to the worst hospitals.Elderly blacks made up 15 percent of patients in the worst hospitals and about 7 percent in the best hospitals. There were similar differences for people on Medicaid, the state-federal health program for the poor. Worst-hospital patients with heart attacks or pneumonia were more likely to die than similar patients at the best hospitals.Medicare chief Don Berwick called the study "valuable, but not completely new." He said the federal government is working to help all hospitals improve."We know they can improve," even if they treat sicker or disadvantaged patients, Berwick said. "There are examples of safety net hospitals that are some of the best in the country." He cited Denver Health, which has low death rates despite treating a large share of poor patients.The health law's so-called "value-based purchasing" rewards hospitals for their rate of improvement, not just for attaining goals, Berwick said. So hospitals that start farther behind can get rewarded for making efforts to catch up. And the law provides money for hospital improvement programs."If I were talking to safety net hospitals, I would say, 'I know it's hard. Here's some help, and if you start (improving), you'll get rewarded for starting,'" Berwick said.For the study, the researchers used data from six sources to determine which hospitals were worst and best. They divided the hospitals into four ranked groups for quality of care and divided them again into four ranked groups for cost.Of 3,229 hospitals analyzed, 122 were in the top group for quality and also in the group that had the lowest costs. The researchers compared those hospitals to the 178 that were in the bottom group for quality and had the highest costs."What can we do to take the lessons from the high-performing institutions and help the low performers improve?" Jha asked. In markets outside of health care, business closures don't so directly affect people's survival, he said, but "here, there are tens of thousands of lives at stake."With the health law's expansion of insurance in 2014, patients may have more choice in hospitals. But most patients don't use tools like Hospital Compare to find the best ones nearby, Jha said. Hospital Compare is a government website that rates how hospitals measure up to certain standards, such as giving heart attack patients aspirin."People go to hospitals because they've always gone there or their families have always gone there or their doctors have always referred them there," Jha said.Nancy Foster of the American Hospital Association said the group is worried about whether the new funding formula will put safety net hospitals at financial risk, but believes all hospitals can improve."There's no hospital in the country right now that doesn't want to do the best for the patients it serves," Foster said. "That's where research comes in and sharing of good results on how to improve."___Online:Hospital Compare: http://bit.ly/ac26ARHealth Affairs: http://www.healthaffairs.org___AP Medical Writer Carla K. Johnson can be reached at http://www.twitter.com/CarlaKJohnsonAssociated Press 
