The “Marilyn Monroe” Hormone, aka “oestradiol”

SCIENTISTS have identified the Marilyn Monroe hormone that is linked to an hour-glass body shape in women, and also an increased desire to trade-up to new men.

Women who have high levels of oestradoil also show elevated confidence and a greater inclination to have sex outside of their current relationship, according to the US-based research. 

Source 1

Marilyn had all the symptoms, they say. A symmetrical face, large breasts, low waist to hip ratio, and a pattern of serial monogamy.  Her relationships always ended in 3-4 years, but Marilyn also had a tendency to trade up in the status department, another behavior associated with oestradoil. She was a bedmate of Arthur Miller, JFK, and Joe DiMaggio.

The University of Texas study swabbed the mouths of 52 women aged 17 to 30 and measured their levels of the hormone. Afterward, each woman filled out a 
survey rating themselves on attractiveness, and where they stood in the realm of relationships and settling down.

Source 2

“High-oestradiol women were considered significantly more physically attractive by themselves and others,” the study stated.
“These women reported somewhat lower levels of satisfaction with and commitment to their primary partners, and a significantly greater likelihood … of becoming acquainted with new potential mates,” the research concluded.
The study found while high-oestradiol women reported being “significantly more likely” to have a serious affair, they did not indicate a greater likelihood of having “brief sexual encounters”.

Source 3

I even managed to find a copy of the original scientific journal.