Navigation Links
Cochrane finds no reliable evidence on effectiveness of electric fans in heatwaves
Date:7/11/2012

A new Cochrane systematic review of the effects of electric fans in heatwaves has found no high quality evidence to guide future national and international policies. The review outlines the type of study that would help resolve the uncertainty which is spelt out in a podcast and an editorial all published today in The Cochrane Library.

Heatwaves in Europe and the USA have led to increasing interest in health protection measures to reduce the impacts of such extreme weather events on human health. Heatwaves are also an issue for mass gatherings and heatwave planning has been incorporated into the preparation for the London Olympics beginning this month.

One way to try to get relief from the heat is to use an electric fan, but health experts have questioned whether this will do more harm than good. A fan might help to increase heat loss if the temperature is below 35C and the fan is not directly aimed at the person, but, when temperatures are above 35 C, the fan might actually contribute to heat gain. Excess sweating can also lead to dehydration and other health problems.

One of the review authors, Dr Saurabh Gupta, a consultant in public health at Hertfordshire Community NHS Trust in the UK, said: "It is important, to know about the potential benefits and harms of electric fans when choosing whether to use one. This is true if you are simply making a decision about your own use of a fan, but it also applies to broader public health decisions, such as whether to give electric fans to groups of people during a heatwave.

"This is particularly important for people who are considered more vulnerable to the effects of heat, such as older adults who are less able to cool down through sweating or increasing the flow of blood to their skin."

The Cochrane researchers tried to provide some of the answers that would help decision makers. Introducing the review, they write: "We looked for high quality research that had compared groups of people using fans with groups who didn't use them during a heatwave. However, we didn't find any research that met our requirements.

"We did find some studies which used designs that are less reliable for answering this sort of question, and these had mixed results. Some suggested that fans might reduce health problems, while others suggested that the fans might make things worse."

Another of the authors, Katie Carmichael from the UK's Health Protection Agency says in the podcast that accompanies the review: "Our review does not support or refute the use of electric fans during a heatwave and people making decisions about them should consider the current state of the evidence base. They might also wish to make themselves aware of local policy or guidelines when making a choice about whether or not to use or supply electric fans."

Professor Mike Clarke from the All-Ireland Hub for Trials Methodology Research in Queen's University Belfast added: "We have shown that the evidence is not already out there on the benefits and harms of electric fans. We need a large randomised trial to resolve this long standing and on-going uncertainty, and to help people make well-informed choices about their use."


'/>"/>
Contact: Jennifer Beal
sciencenewsroom@wiley.com
44-012-437-70633
Wiley
Source:Eurekalert

Related medicine news :

1. Wound care meta-review draws firm conclusions from Cochrane published studies
2. Early-life exposure to chemical in drinking water may affect vision, study finds
3. UC Davis study finds stray-bullet shootings frequently harm women and children
4. Police officer stress creates significant health risks, study finds
5. Doctors overlook chemical illnesses, study finds
6. Community health centers compare well with private practices, Stanford researcher finds
7. Turning off key piece of genetic coding eliminates toxic effect of statins, SLU research finds
8. High-level commission finds an epidemic of bad laws is stifling the global AIDS response
9. Algae extract increases good cholesterol levels, Wayne State research finds
10. Child diabetes levels higher in China than in US, study finds
11. California Woman Finds Ways to Control IBS
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/27/2016)... (PRWEB) , ... June 27, 2016 , ... TopConsumerReviews.com recently ... of Eyeglasses . , Millions of individuals in the United States and Canada ... become a way to both correct vision and make a fashion statement. Even celebrities ...
(Date:6/26/2016)... ... 2016 , ... Brent Kasmer, a legally blind and certified personal trainer is helping to develop ... The fitness app plans to fix the two major problems leading the fitness industry today:, ... all type program , They don’t eliminate all the reasons people quit their ...
(Date:6/25/2016)... ... ... "With 30 hand-drawn hand gesture animations, FCPX users can easily customize each ... Film Studios. , ProHand Cartoon’s package transforms over 1,300 hand-drawn pictures into hand ... select a ProHand generator and drag it above media or text in the Final ...
(Date:6/25/2016)... ... June 25, 2016 , ... Conventional wisdom preaches the benefits of ... of the latter, setting the bar too high can result in disappointment, perhaps even ... progress toward their goal. , Research from PsychTests.com reveals that behind ...
(Date:6/24/2016)... Dallas, Texas (PRWEB) , ... June 24, 2016 ... ... 12th International Conference and Scientific Sessions in Dallas that it will receive two ... Announcement of the grants came as PHA marked its 25th anniversary by recognizing ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... 2016 According to a new ... Pen Needles, Safety Pen Needles), Needle Length (4mm, 5mm, ... Mode of Purchase (Retail, Non-Retail) - Trends & Global ... the market for the forecast period of 2016 to ... Billion by 2021 from USD 1.65 Billion in 2016, ...
(Date:6/24/2016)... Belgium , June 24, 2016 ... the appointment of Dr. Edward Futcher ... Non-Executive Director, effective June 23, 2016.Dr. Futcher was ... Nominations and Governance Committees.  As a non-executive member ... independent expertise and strategic counsel to VolitionRx in ...
(Date:6/23/2016)... 23, 2016  MedSource announced today that it ... software solution of choice.  This latest decision demonstrates ... to their clients by offering a state-of-the-art electronic ... establishes nowEDC as the EDC platform of choice ... clients.  "nowEDC has long been a preferred EDC ...
Breaking Medicine Technology: