Sex-selective abortion affects the human sex ratio—the relative number of males to females in a given age group,[6][7] with China and India, the two most populous countries of the world, having unbalanced gender ratios.
[10] Research into the past four decades of sex-selective abortions in China highlights the significant role these practices have played in shaping the country's demographic profile, despite challenges in estimating exact numbers due to underreporting and the controversial level of sex ratio at birth (SRB).
Sen pointed to research that had shown that if men and women receive similar nutritional and medical attention and good health care then females have better survival rates, and it is the male which is the genetically fragile sex.
[8][24] This school of scholars support their alternate hypothesis with historical data when modern sex-selection technologies were unavailable, as well as birth sex ratio in sub-regions, and various ethnic groups of developed economies.
[32][33][34] In the aggregated results of 56 Demographic and Health Surveys[35] in African countries, the birth sex ratio was found to be 103, though there is also considerable country-to-country, and year-to-year variation.
[15] Families in China are aware of the critical lack of female children and its implication on marriage prospects in the future; many parents are beginning to work extra when their sons are young so that they will be able to pay for a bride for them.
[75] In December 2016, researchers at the University of Kansas reported that the missing women might be largely a result of administrative under-reporting and that delayed registration of females, instead of abortion and infanticide practices.
The finding questioned the earlier assumptions that rural Chinese villagers aborted their daughters on a massive scale and concluded that as many as 10 to 15 million missing women hadn't received proper birth registration since 1982.
These data contradict any hypotheses that may suggest that sex selection is an archaic practice which takes place among uneducated, poor sections or particular religion of the Indian society.
The Indian Medical Association has undertaken efforts to prevent prenatal sex selection by giving its members Beti Bachao (save the daughter) badges during its meetings and conferences.
This is due to the fact that fornication is a major sin in Islam, although it is also haram (forbidden) to kill an innocent soul, which babies and children fall under.
[103] From January 2017 to April 2018, Edhi Center foundation and Chhipa Welfare organisation have found 345 such new born babies dumped in garbage in Karachi only and 99 percent of them were girls.
It left us wondering whether our society is heading back to primitive age," Anwar Kazmi, a senior manager in Edhi Foundation Karachi, told The News.
A study carried out at a Massachusetts infertility clinic shows that the majority of couples using these techniques, such as preimplantation genetic diagnosis came from a Chinese or Asian background.
[120] A 2013 study[115] by John Bongaarts based on surveys in 61 major countries calculates the sex ratios that would result if parents had the number of sons and daughters they want.
[52] Estimates of implied missing girls, considering the "normal" birth sex ratio to be the 103–107 range, vary considerably between researchers and underlying assumptions for expected post-birth mortality rates for men and women.
For example, a 2005 study estimated that over 90 million females were "missing" from the expected population in Afghanistan, Bangladesh, China, India, Pakistan, South Korea and Taiwan alone, and suggested that sex-selective abortion plays a role in this deficit.
[18] Klasen and Wink's 2003 study suggests that this is "related to greater female economic independence and fewer cultural strictures among the poorest sections of the population".
Thus, some scholars argue that disparities in access to resources such as healthcare, education, and nutrition play at least a small role in the high sex ratios seen in some parts of the world.
Moreover, in India, lack of equal access to healthcare has led to increased disease and higher rates of female mortality in every age group until the late thirties (Sen 1990).
Although the legal and social standing of women have greatly improved in the 20th century, son preference remains still strong, and the situation was aggravated by the one child policy.
Starting from the Han period, Confucians began to teach that a virtuous woman was supposed to follow the males in her family: the father before her marriage, the husband after she marries, and her sons in widowhood.
[144] The dowry system in India is a major part of Indian culture and refers to the durable goods, cash, and real or movable property that the bride's family gives to the bridegroom, his parents, or his relatives as a condition of the marriage.
Therefore, son's cultural and economic importance to families and the large expenses associated with multiple children are primary factors leading to China's disparate sex ratio.
[152] In South Korea and Taiwan, high male sex ratios and declining birth rates over several decades have led to cross-cultural marriage between local men and foreign women from countries such as mainland China, Vietnam and the Philippines.
Therefore, if families with daughters continue to be predominantly large, it is likely that the social gap between genders will widen due to traditional cultural discrimination and lack of resource availability.
[163] Another controversy in that of population planning campaigns such as the one child policy in China, and efforts from the governments of several Asian countries, including India and South Korea, from the 1970s onward to limit the number of children a family could have, which have intensified the desire to quickly have a son.
An article by Al Jazeera titled "How Western family planners helped curb the birth of girls in developing countries, the effects of which are felt today" claimed that it was such population policies (which included forced sterilization), which were fully supported, even pushed by the West, that contributed to unbalanced sex ratios.
Warren also notes that, if we are to ever reverse the trend of sex-selective abortion and high sex ratios, we must work to change the patriarchy-based society which breeds the strong son preference.
The government is also supporting implementation of programs and initiatives that seek to reduce gender discrimination, including media campaign to address the underlying social causes of sex selection.