New research shows that Caucasian women may suffer from restless legs syndrome (RLS), a sleep disorder characterized by the strong urge to move the legs, up to four times more than African-American women.
The study, presented at CHEST 2009, the 75th annual international scientific assembly of the American College of Chest Physicians (ACCP), found that, overall, non-African-American (NAA) patients experienced RLS four times more often than African-Americans (AA).
Furthermore, 2 out of 5 Caucasian women were found to have RLS, nearly four times the incidence of RLS in African-American women and the highest incidence among all groups.
"There are significant ethnic differences in the prevalence of restless legs syndrome, but the exact causes of higher prevalence among Caucasians are unknown," said Ammar Alkhazna, MD, University of Missouri, Kansas City, MO. "This likely reflects a combination of factors, including a genetic predisposition to RLS, diet—including iron intake—medications, and possibly culture."
To determine the incidence of RLS among AA and NAA patients, Dr. Alkhanza and his colleagues analyzed standardized interview responses from 190 patients seen at a primary clinic. Of the patients, 103 were AA (42 percent were men) and 87 were NAA, of which 40 percent were men and the majority were Caucasians. Among AA, the diagnosis of RLS was definite in 12 percent of patients, while among NAA, the diagnosis of RLS was definite in 36 percent. In the AA group, the prevalence of RLS was 12 percent for both genders. In the NAA group, the prevalence of RLS among men was 29 percent and 40 percent among women.
"Some risk factors for restless legs syndrome appear to be more common among women," said Dr. Alkhanza. "Women are more likely to be iron deficient than men and have rheumatoid arthritis, which are known risk factors for RLS."
Researchers also found that the overall prevalence of definite RLS was 23 percent, which is significantly more than many previous studies have reported at 3 to 10 percent. Dr. Alkhanza explains that this increased prevalence of RLS could be attributed to the specific study population.
"We believe our study results reflect at least our clinic's patient population. Because our patient population is multiracial and quite diverse, we expect our results would be similar in other large, urban centers with similar pools of patients," said Dr. Alkhanza. "However, as many diseases and medications can lead to the development of restless legs syndrome, there will likely be a difference between populations attending medical clinics as opposed to those who are well and healthy."
"Restless legs syndrome is a common sleep disorder that may not be easily recognized by patients and clinicians," said Kalpalatha Guntupalli, MD, FCCP, President of the American College of Chest Physicians. "Educating clinicians and patients about the signs and symptoms of RLS may raise awareness about this overlooked condition and lead to earlier diagnosis and treatment."
CHEST 2009 is the 75th annual international scientific assembly of the American College of Chest Physicians, held October 31-November 5 in San Diego, CA. The ACCP represents 17,400 members who provide patient care in the areas of pulmonary, critical care, and sleep medicine in the United States and throughout the world. The ACCP's mission is to promote the prevention and treatment of diseases of the chest through leadership, education, research, and communication. For more information about the ACCP, please visit the ACCP Web site at www.chestnet.org.
Jennifer Stawarz | EurekAlert!
Hot cars can hit deadly temperatures in as little as one hour
24.05.2018 | Arizona State University
3D images of cancer cells in the body: Medical physicists from Halle present new method
16.05.2018 | Martin-Luther-Universität Halle-Wittenberg
The more electronics steer, accelerate and brake cars, the more important it is to protect them against cyber-attacks. That is why 15 partners from industry and academia will work together over the next three years on new approaches to IT security in self-driving cars. The joint project goes by the name Security For Connected, Autonomous Cars (SecForCARs) and has funding of €7.2 million from the German Federal Ministry of Education and Research. Infineon is leading the project.
Vehicles already offer diverse communication interfaces and more and more automated functions, such as distance and lane-keeping assist systems. At the same...
A research team led by physicists at the Technical University of Munich (TUM) has developed molecular nanoswitches that can be toggled between two structurally different states using an applied voltage. They can serve as the basis for a pioneering class of devices that could replace silicon-based components with organic molecules.
The development of new electronic technologies drives the incessant reduction of functional component sizes. In the context of an international collaborative...
At the LASYS 2018, from June 5th to 7th, the Laser Zentrum Hannover e.V. (LZH) will be showcasing processes for the laser material processing of tomorrow in hall 4 at stand 4E75. With blown bomb shells the LZH will present first results of a research project on civil security.
At this year's LASYS, the LZH will exhibit light-based processes such as cutting, welding, ablation and structuring as well as additive manufacturing for...
There are videos on the internet that can make one marvel at technology. For example, a smartphone is casually bent around the arm or a thin-film display is rolled in all directions and with almost every diameter. From the user's point of view, this looks fantastic. From a professional point of view, however, the question arises: Is that already possible?
At Display Week 2018, scientists from the Fraunhofer Institute for Applied Polymer Research IAP will be demonstrating today’s technological possibilities and...
So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics
Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...
25.05.2018 | Event News
02.05.2018 | Event News
13.04.2018 | Event News
25.05.2018 | Event News
25.05.2018 | Machine Engineering
25.05.2018 | Life Sciences