Women who undergo certain procedures in the treatment of infertility are more likely to give birth to a boy, reports The Telegraph, referring to the results of a study conducted by Australian scientists. Scientists from the University of New South Wales analyzed data on more than 13,000 babies born through assisted reproduction and found that infertility treatment increased the likelihood of having a boy by 5%. Experts explain that the probability that the baby will be male after in-vitro fertilization is 56 percent, and with normal conception – 51 percent. The same study showed that another technique for assisted reproduction – ICSI (similar to the INF technique, in which the sperm is injected directly into the egg using a microneedle) increases the chances of having a girl. According to the authors of the study, the stage of embryonic development at which the embryo is implanted in the uterus has the greatest influence on the sex of the baby. Usually, the embryos implant either on day 2-3 or on day 5-6 after fertilization. When the implantation is done at a later stage, the chance of having a boy is higher.