Just to clarify, this has NOTHING whatsoever to do with ions or the info on other swaying sites. This is based on some scientific studies that were done.Quote:
Originally Posted by TTC5
These studies found that the most boys were conceived in late summer/early fall for those of us in the Northern Hemisphere - Sept/October (which also makes sense with the Trivers Willard hypothesis - that we might have evolved to conceive more boys when they had the best odds of survival.) Boys need more nutrients from conception onward, so a baby conceived in the fall, right after the summer months when food was plentiful and a mother was best nourished, and then born in the early summer (June/July) when food would be plentiful for several months afterwards, that would be the best chance at survival for a boy.
Girls on the other hand, need less nutrients from conception onward, so if a person got pregnant at a time when food had been less plentiful (in the study, March/April were the peak in girl conceptions - after the winter when food would have been scarce for several months) and then due to deliver at a time (Dec. and Jan.) when nutrients would be scarce for many months afterwards, then a girl would have a better chance at survival than a boy would because they require less nutrients than boys do.
In the Southern Hemisphere, you would just reverse that. More boys would be conceived in March/April because that is your late summer/early autumn, and more girls conceived in Sept/Oct because that is your late winter/early spring.
The idea is that something in our bodies has evolved that picks up on hours of daylight or temperature or both, that sends a very subtle message to our body about the gender of child would have the best shot at survival. It's not the ion theory and in fact contradicts the ion/temp theory.
