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:


(Date:3/31/2016)... , March 31, 2016  Genomics firm Nabsys ... founding CEO, Barrett Bready , M.D., who returned ... of the original technical leadership team, including Chief Technology ... of Product Development, Steve Nurnberg and Vice President of ... to the company. Dr. Bready served as ...
(Date:3/21/2016)... , March 22, 2016 ... with passcodes for superior security   ... leading provider of secure digital communications services, today announced ... technology and offer enterprise customers, particularly those in the ... recognition and voice authentication within a mobile app, alongside, ...
(Date:3/14/2016)... , March 14, 2016 NXTD ) ... mobile commerce market, announces the airing of a new series ... the week of March 21 st .  The commercials will ... its popular Squawk on the Street show. --> ... the growing mobile commerce market, announces the airing of a ...
Breaking Biology News(10 mins):
(Date:4/29/2016)... Marietta, GA (PRWEB) , ... April 29, 2016 ... ... marketer of medical devices used in spinal surgical procedures, today announced the completion ... an enhanced value proposition for current and future customers and partners. Kohlberg ...
(Date:4/29/2016)... -- Elekta is pleased to announce that ... treatment planning software, is available for clinical release. Real-world ... version 5.11 provides significant performance speed enhancements over prior ... four times faster than in previous versions of ... Monte Carlo algorithm, users can ...
(Date:4/28/2016)... ... April 28, 2016 , ... As part ... top industry experts, and expanding its LATAM network and logistics capabilities. Enhancements ... to manage their clinical trial projects. , The expansion will provide unmatched clinical ...
(Date:4/27/2016)... York, NY (PRWEB) , ... April 27, 2016 ... ... realizing it. Touch screen mobile devices with fingerprint recognition for secure access, ... libraries are only a few ways consumers are interacting with biometrics technology today. ...
Breaking Biology Technology:
Cached News: