Tuesday, 07 Aug, 2007 Science

Male birth decline - an environmental fault?


Researchers are concerned about major male birth decline and blame air pollution for this. The drop in number of male babies born in comparison to female babies was largely observed in United States and Japan.

Devra Davis, a scientist from University of Pittsburg suggests in the publication of June issue of Environmental Health Perspectives that there is a strong tendency for less boys to be born lately. She says that it is mostly connected to the endocrine changes that was caused by environmental problems.

The chief expert at Environmental Health Perspectives group also claims that during the research they found out that twice as many girls as boys were born between 1999 and 2003 in one of the most polluted states of Ontario, thus implying that pollution affects male births.

The average gender ratio that is observed for boys and girls births is around 105 boys born for every 100 girls worldwide. Although more males are born than females, by by the age of 36, women outnumber men. This is explained by such facts as boys are more susceptible to various diseases like diabetes, heart diseases and also die from accidents more often than women. In general, more twice as many boys than girls die at adolescence.

The decline in male births is a suggestive sign of environmental problems, scientists say, and the situation can become even worse.

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