No, smoking does not increase the chances of having a girl. In fact, research suggests the opposite.
The Impact of Smoking on Sex Selection
Studies indicate that smoking can negatively affect the chances of conceiving a boy. One piece of research states that smoking not only reduces the chances of conceiving a male child but could also prevent male embryos from implanting in the womb and lead to miscarriages. [Reference: 08-Apr-2007] This suggests that smoking may decrease the likelihood of having a girl, but this is an indirect consequence of its impact on male embryos. It does not inherently increase the probability of having a female child.
The sex of a child is determined at conception by the father's sperm (carrying either an X or Y chromosome) and the mother's egg (carrying an X chromosome). Smoking doesn't alter this fundamental biological process. Any observed correlation between smoking and a higher proportion of female births is likely due to the aforementioned selective impact on male embryos.
Understanding the Research
It's crucial to understand that the cited research highlights the detrimental effects of smoking on male embryo implantation and survival. It does not suggest a causal link between smoking and an increased probability of having a girl.
