Obstetrics & gynaecology

Stress may be associated with fertility issues in women

Female rats exposed to a scream sound may have diminished ovarian reserve and reduced fertility, according to a small animal study published in the Endocrine Society's journal, Endocrinology.

Neuroscience

Researchers discover how hormones define brain sex differences

Sex hormones play an important role in shaping an animal's behavior, and their influence starts early. Early-life hormonal surges help shape the developing brain, establishing circuitry that will influence behavior for a ...

Oncology & Cancer

How do hormones affect tumor DNA in men with breast cancer?

Breast cancer in men is rare, and men with breast cancer receive the same anti-hormonal therapy as women. Often with effect, but there was no scientific basis for it before now. Cancer researchers led by Wilbert Zwart from ...

Psychology & Psychiatry

Sex change hormonal treatments alter brain chemistry

Hormonal treatments administered as part of the procedures for sex reassignment have well-known and well-documented effects on the secondary sexual characteristics of the adult body, shifting a recipient's physical appearance ...

Medical research

Low testosterone raises risk of age-related functional disability

Elderly men with low levels of testosterone or other sex hormones have twice the likelihood of having declining physical function over two years' time compared with their peers who have the highest hormone levels, a new study ...

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