Echinacea is not effective in shortening the duration or decreasing the severity of upper respiratory tract infections in children, according to a study in the December 3 issue of The Journal of the American Medical Association (JAMA).
Upper respiratory tract infections (URIs) are a significant health burden in childhood, according to background information in the article. The average child has six to eight colds each year, each lasting seven to nine days. While children are frequently given drugs such as decongestants, antihistamines, and cough suppressants to reduce symptoms, there is little evidence that these medications are effective in children younger than 12 years. The authors add that it has been estimated that 11 percent to 21 percent of children in the United States and Canada who are receiving care from conventional physicians are also using alternative therapies. Echinacea, one of the most commonly used herbal remedies in the U.S., has been used extensively for the prevention and treatment of URIs in adults.
James A. Taylor, M.D., from the University of Washington, Seattle, and colleagues, conducted a randomized controlled trial to determine the effectiveness and safety of Echinacea purpurea (a type of echinacea used for medicinal purposes) in treating URIs in children two to 11 years old. A total of 524 children were included in the study. The patients were randomized to receive either echinacea or placebo for up to three URIs over a four-month period. The echinacea or placebo was started at the onset of symptoms and continued for a maximum of ten days.
The importance of biodiversity in forests could increase due to climate change
17.11.2017 | Deutsches Zentrum für integrative Biodiversitätsforschung (iDiv) Halle-Jena-Leipzig
Win-win strategies for climate and food security
02.10.2017 | International Institute for Applied Systems Analysis (IIASA)
The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.
Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...
Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.
That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...
Computer Tomography (CT) is a standard procedure in hospitals, but so far, the technology has not been suitable for imaging extremely small objects. In PNAS, a team from the Technical University of Munich (TUM) describes a Nano-CT device that creates three-dimensional x-ray images at resolutions up to 100 nanometers. The first test application: Together with colleagues from the University of Kassel and Helmholtz-Zentrum Geesthacht the researchers analyzed the locomotory system of a velvet worm.
During a CT analysis, the object under investigation is x-rayed and a detector measures the respective amount of radiation absorbed from various angles....
The quantum world is fragile; error correction codes are needed to protect the information stored in a quantum object from the deteriorating effects of noise. Quantum physicists in Innsbruck have developed a protocol to pass quantum information between differently encoded building blocks of a future quantum computer, such as processors and memories. Scientists may use this protocol in the future to build a data bus for quantum computers. The researchers have published their work in the journal Nature Communications.
Future quantum computers will be able to solve problems where conventional computers fail today. We are still far away from any large-scale implementation,...
Pillared graphene would transfer heat better if the theoretical material had a few asymmetric junctions that caused wrinkles, according to Rice University...
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