hormones

Research into the biological basis of gender identity is in its infancy, but clues are beginning to emerge.

Doctors report that a regimen of hormones, an antiemetic drug, and pumping gave the woman enough milk production to feed her baby exclusively breastmilk for six weeks.

The gel, which men rub on their upper bodies daily, delivers synthetic progestin to block the testes from producing normal levels of sperm.

Asprosin—involved in a rare disease called neonatal progeroid syndrome—targets neurons to stimulate appetite, and blocking the hormone wards off weight gain in rodents.

Decades of evidence point to the untoward health effects of endocrine disruptor exposures, yet little is being done to regulate the chemicals.

A small, placenta-produced peptide fixes the pregnancy-related condition in mice. 

A protein secreted by osteoblasts crosses the blood-brain barrier to regulate hunger in mice.

Researchers solve the mystery of 15-year-old mutant ferns with disrupted sex determination.

The public may still believe that male-specific traits, such as high testosterone levels, lead to many of the gender inequalities that exist in society, but science tells a different story.

Melvin Grumbach, a clinician and researcher who described the hormonal dynamics of puberty and numerous endocrine disorders, has passed away at age 90.

Male mice exposed to females, their urine, or a chemical in their urine lost sensory neurons in their vomeronasal organs that respond to that chemical.

Researchers argue for the consideration of hormones and sex chromosomes in preclinical experiments.

More than you think (or could make use of)

Ghrelin promotes fat storage not feeding, according to a study.

Patients with neonatal progeroid syndrome lack a glucose-releasing hormone, while people with insulin resistance have an abundance.

Signs of getting older are less common among rodents with ramped-up ghrelin production.

Medication to prevent prematurity in humans harms cognitive flexibility in rats.

A hormone made in the liver controls how much sugar mice eat, according to a study.

Bacteria in the intestine produce proteins that stop rodents from eating.

Leptin, the satiety hormone produced by fat, affects neuronal signaling in the mouse brain; interference with this pathway can influence the rewarding effects of running in the animals.