Better Find That Prom Date Early...
This is kinda disturbing:
In the US, we've gone from a ratio of 105.5 boys for every 100 girls to a ratio of 104.6 guys for every 100 girls. And considering that males have a lower life expectancy than females, this change is bigger than it looks.
Mother Nature has always ensured that male births outnumber female ones, but the gap has been gradually narrowing over the past three decades in the U.S. and Japan, according to a new study.
Researchers suspect the decline in male births can be explained, at least in part, by paternal exposure to environmental toxins, such as certain pesticides, heavy metals, solvents or dioxins — chemical byproducts produced during incineration or the manufacture of other chemicals.
In the US, we've gone from a ratio of 105.5 boys for every 100 girls to a ratio of 104.6 guys for every 100 girls. And considering that males have a lower life expectancy than females, this change is bigger than it looks.
Comments