andrewducker + hormones   79

What determines Caster Semenya's sex?
It is, of course, not as simple as you might think.
sex  gender  genetics  hormones 
august 2009 by andrewducker
Hormones in milk can be dangerous
"Among the routes of human exposure to estrogens, we are mostly concerned about cow's milk, which contains considerable amounts of female sex hormones," Ganmaa told her audience. Dairy, she added, accounts for 60 percent to 80 percent of estrogens consumed.

Part of the problem seems to be milk from modern dairy farms, where cows are milked about 300 days a year. For much of that time, the cows are pregnant. The later in pregnancy a cow is, the more hormones appear in her milk.

Milk from a cow in the late stage of pregnancy contains up to 33 times as much of a signature estrogen compound (estrone sulfate) than milk from a non-pregnant cow.
cancer  diet  health  hormones  milk 
june 2009 by andrewducker
Hormone drives sexy women to infidelity, says study
University of Texas psychologists Kristina Durante and Norman Li found that women with high concentrations of the hormone oestradiol were likelier to flirt, kiss and have a serious affair outside an established relationship.
science  women  hormones  monogamy  sexuality 
january 2009 by andrewducker
Scented Oils Tied to Boys' Breast Growth
Lavender and tea tree oils found in some shampoos, soaps and lotions can temporarily leave boys with enlarged breasts in rare cases, apparently by disrupting their hormonal balance, a preliminary study suggests.
november 2008 by andrewducker
Natural birth 'may aid baby bond'
Mothers who give birth naturally are more responsive to the cry of their baby than those who choose to have a Caesarean, American research suggests.

Brain scans on 12 new mothers soon after birth found more activity in areas linked to motivation and emotions in those who had a vaginal delivery.

The contractions which are an essential part of a natural birth trigger the release of the hormone oxytocin, which is thought to play a key role in shaping maternal behaviour.
babies  oxytocin  hormones  brain 
september 2008 by andrewducker
'Transsexuality gene' boosts male hormones - sex - 29 July 2008 - New Scientist
A gene variant has been identified that appears to be associated with female-to-male transsexuality.
The variation is in the gene involved in the metabolism of sex hormones. 44% of FtM transsexuals carried it, compared with 31% of non-transsexual women.
transexualism  hormones  genetics 
july 2008 by andrewducker
Brain's Reward Circuit Activity Ebbs And Flows With A Woman's Hormonal Cycle
While women were winning rewards, their circuitry was more active if they were in a menstrual phase preceding ovulation and dominated by estrogen, compared to a phase when estrogen and progesterone are present.
science  hormones  gender  brain  psychology 
february 2007 by andrewducker
Women "Advertise" Fertility
The researchers took two photos of each of 30 women, one near ovulation and one at the other end of her cycle. They then showed the paired photos (with faces obscured) to a group of observers, who were asked to judge in which photo the women were trying t
gender  sexuality  hormones  brain  psychology 
january 2007 by andrewducker

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