HOME >> MEDICINE >> NEWS
Teenage boys exposed to environmental pollutants

A research letter in this week's issue of THE LANCET provides further evidence that adolescent boys exposed to organic pollutants are less likely to father a male child in adulthood.

Investigators from the National Cheng Kung University Medical College, Taiwan, and the London School of Hygiene and Tropical Medicine, UK, studied the sex of over 2000 children born to individuals involved in the Yucheng oil accident, Taiwan, in 1979. These individuals were exposed to high concentrations of polychlorinated biphenyls (PCBs) by the ingestion of cooking oil. PCBs are more widely present at much lower concentrations.

Men exposed to PCBs before age 20 years had a 35% lower chance of having a baby boy than individuals matched for age and location who were not exposed to the pollutants. The male to female ratio for men exposed after 20 years of age was only 10% lower than in the control population; there was no significant difference in the male to female birth ratio among exposed women compared with women in the control population.

Yueliang Leon Guo comments: "The factors that determine sex are still under investigation, and the mechanisms of action that explain sex-ratio alterations are not yet understood. Sexual differentiation in human beings is controlled by genetic and hormonal factors. We propose that dioxin-like compounds might have a negative effect on the viability of the Y-chromosome carrying sperm or on the development of XY-fertilised eggs."


'"/>

Contact: Richard Lane
richard.lane@lancet.com
44-20-7424-4949
Lancet
11-Jul-2002


Page: 1

Related medicine news :

1. Teenage highs and lows
2. Teenage hormone therapy to reduce adult height of tall girls linked to reduced fertility
3. Teenage smoking still worryingly high: Girls twice as likely as boys to puff away
4. Teenagers with cancer are missing out on vital services
5. UK Teenage Cancer Trust demands government action to aid young cancer patients
6. Teenage girls lacking in vitamin D
7. Teenagers, drinking and driving: a quick trip to the grave
8. Exercise Is The Best Means Of Weight Control In Teenagers
9. Higher Prices Wont Stop Teenage Smokers
10. Studies Find Public Policies For Children And Teenagers Not Very Effective
11. Combination Of Interventions Are Found To Be Most Effective In Improving Driving Behavior Among Teenagers

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:10/13/2017)... ... 13, 2017 , ... The International Association of Eating Disorders ... for the field of eating disorders, announces the opening of early registration for ... Florida at the Omni Resort at ChampionsGate. , The annual iaedp™ ...
(Date:10/13/2017)... ... October 13, 2017 , ... Many families have long-term ... long-term care insurance companies have a waiver for care if the client has a ... when the family pays for care, is often waived, so the benefits from their ...
(Date:10/13/2017)... , ... October 13, 2017 , ... ... be giving viewers the lowdown on sciatica in a new episode of "Success ... focuses on current events and innovation and investigates each subject in-depth with passion ...
(Date:10/12/2017)... Francisco, CA (PRWEB) , ... October 12, 2017 ... ... Dr. Cheng, are now treating sleep apnea using cutting-edge Oventus O2Vent ... apnea, a serious sleep disorder characterized by frequent cessation in breathing. Oral appliances ...
(Date:10/12/2017)... ... October 12, 2017 , ... ... in post-acute health care, have expanded their existing home health joint venture through ... AccentCare has been operating a joint venture home health company with Asante, delivering ...
Breaking Medicine News(10 mins):
(Date:10/2/2017)... 2, 2017  AllianceRx Walgreens Prime, the combined central ... and pharmacy benefit manager Prime Therapeutics LLC (Prime), today ... included the unveiling of new signage at its headquarters ... as at a few other company-owned facilities across the ... patients, some of whom will begin to see the ...
(Date:9/27/2017)... their devotion to personalized service, SMP Pharmacy Solutions announces their ... South Florida Business Journal,s 50 Fastest-Growing Companies, and listed for ... specialty pharmacy has found its niche.  To that end, the ... by SFBJ as the 2017 Power Leader in Health Care. ... award in October, Bardisa said of the three achievements, "It,s ...
(Date:9/22/2017)... Sept. 22, 2017  As the latest Obamacare repeal ... Bill Cassidy (R-LA) and Lindsey Graham ... the medical device industry is in an odd place. ... the 2.3% excise tax on medical device sales passed ... want covered patients, increased visits and hospital customers with ...
Breaking Medicine Technology:
Cached News: