The "love hormone" system starts to develop in the womb and is important in helping us deal with stress.
...just don't call it the new phrenology.
Teenagers aren't just lazy. Their sleep hormones aren't calibrated to let them get up and go until later in the morning – which has academic and health consequences when school starts too early.
Parents' DNA try to manipulate one another in a bid to shape junior in their mould.
Having a newborn can be rough, whether you're a mom or a dad. New research ties men's testosterone to their postpartum depression – with some surprising upsides for their partners.
Most pregnant women are aware of the advice to quit smoking, avoid alcohol, and fear soft cheese, but much less is done to avoid stress during pregnancy, despite its harms.
If something goes wrong in pregnancy, a boy baby is more likely to be born malnourished or stillborn than a girl. This may have an evolutionary basis.
Women have evolved to have stronger immunity than men. But this comes with downsides -
women are more likely to have autoimmune diseases due to their "reactive" immune systems.
Until now, the processes that lead some girls to start developing before others have been poorly understood.
Estrogens also have many positive effects on mental health, cognitive function, libido and protection of the brain, possibly even slowing the onset of Alzheimer’s disease.
Sex hormones do affect us. But to what extent?
Vaginal discharge varies in consistency, texture, smell, taste and volume in the same woman from day to day, week to week, month to month and beyond.
Gigantism and acromegaly are rare conditions where a benign tumour causes excessive production of growth hormone (GH), which stimulates the growth of the skeleton and all tissues in the body.
Are men hot-blooded, sex-driven creatures that think about sex every seven seconds? Not quite.
Early studies suggest a process called advanced in-vitro maturation may be able to treat infertility without women needing to inject themselves with high doses of hormones for several weeks.
While many men want to seek treatment for 'low T,' a low level of testosterone is good when it comes to being a nurturing father. Here's why.
Every woman who reaches midlife will experience menopause when her ovaries eventually run out of eggs. So what's happening with her hormones?
"Love drugs" have their risks, but are also potentially liberating, so people must be free to make their own choices about what works best for them.
Embryos greedily want more resources than their fair share. New research investigates how early in evolution their hormonal tactics arose.
Fathers experience an equal rise in the bonding chemical oxytocin as mothers do when interacting with their infant.