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:9/7/2018)... ... ... Start your engines and race to the new Riley Children’s Health Sports ... is the name of the game here – whether it’s flying straight forward on ... Motor Speedway oval. , The timing couldn’t be better with a few of the ...
(Date:9/7/2018)... BILLINGS, Mont. (PRWEB) , ... September 07, 2018 , ... ... in Montana, is launching its first-ever national retreat for moms who are living without ... is slated for the weekend of October 26, 27 and 28 at Fairmont ...
(Date:9/2/2018)... (PRWEB) , ... September 01, ... ... Mammography is proud to add HydraFacial MD® Elite to its leading menu ... uses patented, vortex-suction technology and an infusion of clinically-proven ingredients to dramatically ...
(Date:9/1/2018)... ... ... “Vitamin D is the Key: The Myth, the Reality and the Revolutionary ... in Vitamins and Supplements, Medical Atlases, Vitamins, Medical References, and was recognized as a ... United States. , With all the medical advancements over the last hundred years, vitamin ...
(Date:9/1/2018)... ... ... Alice Branton shared her personal story on NBC Daytime about how her ... , With all the medical advancements over the last hundred years, vitamin D ... problem worldwide irrespective of age, location, ethnicity, and gender. Even in those residing in ...
Breaking Medicine News(10 mins):
(Date:9/13/2018)... NEVADA CITY, Calif. (PRWEB) , ... September 13, 2018 , ... ... Education Month . This annual campaign is designed to raise awareness on how to ... 6 Americans (or 48 million people) get sick, 128,000 are hospitalized, and 3,000 die ...
(Date:9/13/2018)... ... September 13, 2018 , ... Becker's Healthcare is pleased to ... and health systems rely on CIOs and IT department leaders to develop long-term ... cybersecurity initiatives. Those who lead community hospital and health system IT departments encounter ...
(Date:9/12/2018)... ... ... Donaldson Plastic Surgery has been included on the Inc. 5000 list of the ... central Ohio's fastest growing businesses. The plastic surgery practice was ranked number 4,202 on ... only medical practice and plastic surgery office to make the regional Fast 50 list. ...
Breaking Medicine Technology:
Cached News: