brown spotted octopus blending in with its background
Steroids May Explain Octopuses’ Self-Starvation
Two glands increase steroid production after female California two-spot octopuses mate, a study finds. Those hormones may be responsible for the animals’ self-destructive behavior.
ABOVE: © ISTOCK.COM, Gerald Corsi
Steroids May Explain Octopuses’ Self-Starvation
Steroids May Explain Octopuses’ Self-Starvation

Two glands increase steroid production after female California two-spot octopuses mate, a study finds. Those hormones may be responsible for the animals’ self-destructive behavior.

Two glands increase steroid production after female California two-spot octopuses mate, a study finds. Those hormones may be responsible for the animals’ self-destructive behavior.

ABOVE: © ISTOCK.COM, Gerald Corsi

hormones

Book cover of Why We Love: The New Science Behind Our Closest Relationships
Opinion: Can Science Capture Love?
Anna Machin | Mar 14, 2022
Researchers who study the phenomenon in humans should incorporate subjective experiences into data on love.
Book cover of Why We Love: The New Science Behind Our Closest Relationships
Book Excerpt from Why We Love
Anna Machin | Mar 14, 2022
In Chapter 1, “Survival,” author Anna Machin describes the health benefits of strong human bonds.
A black and brown ant stands over various sizes of whitish purple, oval shaped larvae and yellow, oblong eggs
A Single Transcription Factor Changes Ants to Queens
Abby Olena | Nov 5, 2021
The transcription factor can also drive the opposite transition depending on which hormone activates it, according to a new study.
Illustration of a rat with red, white and blue sections
Hormones May Contribute to Asymmetrical Effects of Brain Injury
Catherine Offord | Sep 2, 2021
Researchers studying rats claim to have found a novel connection between damage on one side of the brain and problems with the posture or movement of limbs on the opposite side of the body.
A woman in a colorful blouse smiles in front of a blurred background of books on shelves
Darby Saxbe Digs into Relationships’ Effects on Human Biology
Shawna Williams | Aug 1, 2021
In her current work, the University of Southern California psychologist is examining how the transition to fatherhood affects men’s brains.
Black and white image of Jean Wilson in an office, wearing a lab coat.
Endocrinologist Jean Wilson Dies at 88
Lisa Winter | Jun 24, 2021
The University of Texas Southwestern professor’s research focused on the androgen hormones that cause male sexual differentiation and may also lead to prostate disease.
Hippocampal neurons are labeled in blue and purple on a black background
New Role for Leptin: Promoting Synapse Formation in Rat Neurons
Abby Olena | May 20, 2021
The hormone, which is well known for regulating appetite, appears to influence neuronal development—a finding that could shed light on disorders such as autism that involve dysfunctional synapse formation.
High Stress Hormone Levels Halt Mouse Fur Growth
Jef Akst | Apr 1, 2021
Corticosterone interferes with signaling in the skin that normally activates hair follicle stem cells, possibly explaining the link between stress and hair loss.
Infographic: Measurements that Predict People’s Behavior
Paul J. Zak | Oct 1, 2020
Changes in blood levels of oxytocin and adrenocorticotropic hormone and patterns of neural activity predict how much money people will donate to a cause with high accuracy.
Neurological Correlates Allow Us to Predict Human Behavior
Paul J. Zak | Oct 1, 2020
A combination of factors, from oxytocin release as an indicator of emotional investment to cortisol and other hormones that correlate with attention, can forecast what people will do after an experience.
Roger Unger, diabetes, metabolic syndrome, type 1, type 2, glucagon, insulin, leptin, lipotoxicity, University of Texas Southwestern, endocrinology, hormone, obituary
Roger Unger, Endocrinologist and Authority on Diabetes, Dies
Amanda Heidt | Sep 4, 2020
The University of Texas Southwestern scientist studied the roles of glucagon and insulin in regulating blood glucose, leading to several successful treatments.
Two Studies Question Function of Bone Hormone Osteocalcin
Ruth Williams | May 29, 2020
Independently produced knockout mouse strains fail to find evidence of the bone protein’s endocrine functions, and divide researchers’ opinions.
Into the Light: A Profile of Joanne Chory
Emily Makowski | Mar 1, 2020
The plant geneticist has revolutionized researchers’ understanding of how light affects plant growth and development, and is engineering plants to combat climate change.
Bruce McEwen
Bruce McEwen, Stress Hormone Researcher, Dies
Emily Makowski | Jan 6, 2020
The Rockefeller University neuroendocrinologist made landmark discoveries on how hormones affect brain structure.
Monthly Contraceptive Pill Shows Promise in Pig Study
Catherine Offord | Dec 5, 2019
A device that releases synthetic hormones slowly over time could one day provide a more practical alternative to daily birth control pills, say scientists.
Rising Temperatures Expected to Spur More Early Births
Ashley Yeager | Dec 2, 2019
From 1969 to 1988, 25,000 infants were born early each year as a result of hot weather, and with global warming pushing temperatures higher, more babies will be at risk for early birth.
Image of the Day: Reprogrammed Ants
Emily Makowski | Nov 13, 2019
Watch soldier ants behave more like foragers after scientists change their gene expression.
Image of the Day: Fizzy Birth Control
Emily Makowski | Nov 7, 2019
A microneedle patch can subcutaneously deliver a contraceptive hormone to rats.
Image of the Day: Sea Cucumber Hormone Therapy
Emily Makowski | Oct 28, 2019
Researchers will inject a relaxin-like hormone into sea cucumbers to boost the animals’ numbers.