HOME >> BIOLOGY >> NEWS
Disposable nappies may explain the increase in male infertility

Scrotal temperature is increased in disposable plastic lined nappies 2000; 83:364-8

Leading article: How vulnerable is the developing testis to the external environment? 2000;83:281-2

The use of disposable nappies may explain the increase in male infertility over the past 25 years, suggests a study in the Archives of Disease in Childhood. Nappies lined with plastic significantly increase the temperature of the scrotum - the testicular sac - in boys, the research shows. Temperature is critical to normal testicular development and sperm health.

The research team monitored the scrotal temperature of 48 healthy boys, including five premature babies, from birth up to the age of 42 years, using a tiny thermal probe. The study ranged over two 24-hour periods: during one the boys wore re-usable cotton nappies; during the other, they wore plastic-lined disposable nappies. Temperature was measured during waking and sleeping hours; and rectal temperature was also measured for comparison.

Temperature was consistently and significantly higher - up to 1° C above body temperature - when the disposable nappies were worn. The highest temperatures were recorded in the youngest babies. Rectal temperatures were significantly lower than scrotal temperatures when the children wore disposable nappies, but were the same when cotton nappies were worn. This, says the authors, shows that the insulation properties of the disposable nappies impaired normal testicular cooling mechanisms. In 13 boys, the cooling mechanism failed altogether.

In adults the evidence shows that exposure to high temperatures, for example during episodes of fever or while in a a sauna, can reduce sperm count, and has been used as a form of contraception in men. The subsequent risk of adult infertility in boys whose testicles fail to descend at the normal age
'"/>

Contact: BMA Press Office
pressoffice@bma.org.uk
44-207-383-6254
BMJ Specialty Journals
24-Sep-2000


Page: 1 2

Related biology news :

1. Missing genes may help explain why plague bacteria are so deadly
2. MIT team explains yin-yang of ginseng
3. Scientists fear new Ebola outbreak may explain sudden gorilla disappearance
4. Study explains spatial orientation differences between sexes
5. New model explains why costly insect outbreaks hard to predict
6. Brain serotonin enzyme finding might explain psychiatric disorders
7. Study helps explain island populations susceptibility to exotic diseases
8. Small gene changes in some leukemia patients may explain varying responses to chemotherapy
9. Teachers turn to Tolkein to explain physics
10. Discovery helps explain how cells package DNA
11. New study may explain how fats damage neurons in Alzheimers patients

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Disposable nappies may explain the increase male infertility

(Date:1/22/2015)... , Jan. 21, 2015  Analyst Report Issued by Small ... Brands report showed that planet-wide, transactions at merchants on the ... the total number of credit, debit, and prepaid cards reached ... were victims of fraudulent card usage in 2012, and credit ...
(Date:1/22/2015)... NEW YORK , Jan. 22, 2015   EyeLock, Inc. ... announced it has appointed Steve Gerber to the ... Gerber will be responsible for leading development of mobile platforms ... 25 years of success and innovation in the semiconductor industry ...
(Date:12/22/2014)... Inc. (NASDAQ: NXTD and NXTDW) ("NXT-ID" or ... mobile commerce market, announces it has retained famous pickpocket, entertainer ... International CES debut of the Wocket™ biometric smart wallet.  ... NXT-ID booth January 6th and 7 th , 2015, demonstrating ...
Breaking Biology News(10 mins):$4.80 Near Term Price Target with "Buy" given by CapRock Research for NXT-ID, Inc. (NASDAQ: NXTD) issued by Small Cap IR 2EyeLock Names Steve Gerber as Senior Vice President of Mobile and Wearables 2NXT-ID Hires Master Pickpocket and Security Consultant Apollo Robbins for Wocket Smart Wallet CES 2015 Debut 2NXT-ID Hires Master Pickpocket and Security Consultant Apollo Robbins for Wocket Smart Wallet CES 2015 Debut 3NXT-ID Hires Master Pickpocket and Security Consultant Apollo Robbins for Wocket Smart Wallet CES 2015 Debut 4
(Date:12/24/2014)... (PRWEB) December 23, 2014 Earlier this year ... Sherley, director of the Adult Stem Cell Technology Center, LLC ... under appreciated unique property of adult tissue stem cells. ... the Past, Important for the Future,” embodied the essence of ...
(Date:12/24/2014)... On Friday, December 19, 2014, President Obama signed ... Appropriations Act of 2015, which for the first time, ... the Congressionally Directed Medical Research Programs (CDMRP) administered by ... working in conjunction with its allies on Capitol Hill, ...
(Date:12/24/2014)... 23, 2014 The report provides ... definition, classification, application and industry overview. This report ... cost structure. Production is separated by regions, technology ... materials, equipment, downstream client survey, marketing channels, industry ...
(Date:12/24/2014)... The report expects global cell isolation and ... provides a carefully analyzed data about the vital drivers, restraints, ... Copy of Report @ http://bit.ly/1yUxy0T , According to ... witnessing growth at an impressive CAGR during near future. It ...
Breaking Biology Technology:Adult Stem Cell Technology Center, LLC’s Director Sherley's Address on What’s Holding Back Regenerative Medicine Featured on Omics Group Website 2Adult Stem Cell Technology Center, LLC’s Director Sherley's Address on What’s Holding Back Regenerative Medicine Featured on Omics Group Website 3Adult Stem Cell Technology Center, LLC’s Director Sherley's Address on What’s Holding Back Regenerative Medicine Featured on Omics Group Website 4Rare Brain Condition Now Eligible for Department of Defense Research Dollars 2Worldwide Methyl Mercaptan Market 2015-2020 Forecasts on Development & Trends Now Available at ReportsnReports.com 2The Cell Expansion Market is Expected to Reach $14.8 billion by 2019 - New Research Report by MarketsandMarkets 2The Cell Expansion Market is Expected to Reach $14.8 billion by 2019 - New Research Report by MarketsandMarkets 3
Cached News: