Serious impact of sex selection in parts of Asia

SELECTIVE abortion and a preference for sons has caused serious imbalance in the number of males and females born in parts of India, China and South Korea, experts say.

Across human populations, the sex ratio at birth is around 105 males to 100 females. But in some parts of South Korea and India it has reached 125, while in China it has reached more than 130. 

Millions of young men will in future be unable to marry or have children, which the experts believe could lead to psychological issues, increased violence and a rise in crime.

CMAJ 2011, online 14 March

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