There is an epidemic of obesity, and no one knows what is causing it.
One item, however, is worthy of investigation. Females with early andrenarche, (early pubic hair) in addition to going boy crazy at a disturbingly early age, tend to become obese when they finally reach puberty and their figure finally catches up with their behavior and further enables their behavior.
And these days, pretty much all girls have what once would have been called early andrenarche. So, abnormal hormones first, abnormal fat later.
So, could be that whatever is causing the obesity epidemic, is the same thing as in causing declining masculinity in males and early sexual behavior in females.
Note that the absence of a father is risk factor for early andrenarche, suggesting that the problem might not be estrogen in the water supply, but metaphorical estrogen in the metaphorical water supply.
In the ancestral environment, early sexual behavior in fatherless females would have been a survival mechanism. In the absence of a father, and the absence of Uncle Sam the big pimp, need a sugar daddy. So, when the state makes fathers weak, that weakness tends to make their daughters into fat sluts.
If early andrenarche correlates with obesity, the interesting question, to which I don’t have the answer, is: Does late (by modern standards) andrenarche correlate to less obesity? Obviously it correlates to less promiscuity.
Andrenarche can be delayed by the drug spironolactone, (safe for girls, unsafe for boys) and parents alarmed by early sexual behavior sometimes treat their daughters to delay andrenarche – the humane and reversible alternative to clitoridectomy. Perhaps all girls should have andrenarche delayed to what used to be normal. Pubic hair is an indicator of sexual interest – you probably don’t want your daughters developing pubic hair earlier than their other secondary sexual characteristics.