hormones

New research shows children are very sensitive to bright light before bedtime, adding to concern about night-time digital technology use. A US study found that one hour of exposure to bright light before bedtime almost completely shuts down the production of the sleep-promoting hormone melatonin in ...

A voluntary recall of 1 batch of Evamist (estradiol transdermal spray) has been initiated by Perrigo due to potential product damage. The recall is being issued at the pharmacy level. The Company states that cracks in the vial neck near the crimp may result in product evaporation or leaking which would ...

Single-hormone (insulin only) and dual-hormone (insulin and glucagon) artificial pancreas systems perform equally well in preventing nocturnal hypoglycemia in adults with type 1 diabetes (T1D) and hypoglycemia unawareness, according to a randomized crossover study published in Diabetes ...

The researchers explored how prenatal exposure to androgens -- hormones that are typically higher in males than in females -- affected whether girls played more often with boys or girls. They found that androgen exposure was not associated with girls spending more or less time in activities with other girls ...

Prenatal exposure to male hormones influences which activities girls are interested in, but the effects of those hormones do not extend to gender identity, ... The researchers explored how prenatal exposure to androgens -- hormones that are typically higher in males than in females -- affected whether girls ...

New research suggests that a deficiency of vitamin D during pregnancy can lead to negative effects on social development and motor skills in preschool age children. Researchers in Britain gathered data from more than 7,000 mother-child pairs, finding that pregnant women who were deficient in vitamin D ...

This effect proved more rapid than the previous understanding of how sex hormones classically affect cellular functioning, which requires hours or days for the hormone to diffuse into the cell, bind to receptors, move into the cell nucleus, bind to a specific part of the cell's DNA, and lead to the process in ...

“Female hormonal intelligence evolved to start early — and last a lifetime,” Haselton writes. Women's hormone cycles embody half a billion years of evolutionary wisdom. She has argued against what she calls the centuries-old stereotype that hormonal conditions such as premenstrual syndrome, or PMS, ...

The researchers explored how prenatal exposure to androgens—hormones that are typically higher in males than in females—affected whether girls played more often with boys or girls. They found that androgen exposure was not associated with girls spending more or less time in activities with other girls, ...

Thirty-something comic actors Nick Kroll and John Mulaney are well beyond adolescence, but they still remember the indignities, hormone rushes and confusion of puberty — and they channel it all in their animated comedy Netflix series, Big Mouth. The show centers on a group of junior high kids whose ...

Putting on boy's clothes doesn't make us a boy. Taking male hormones doesn't make you a male. Wanting to be or not wanting to be doesn't change the facts. Believing a feeling doesn't make a feeling true. Thinking thoughts don't mean those thoughts are true. Thinking about a problem 24/7 doesn't ...

Scientists at the University of Edinburgh, UK, have identified a hormone that could support early pregnancy by preparing the womb lining for ... This improvement could be linked to an increase in production of active androgens - hormones found in high levels in men - which also occurred as a result of the ...

Purpose: The current study examined the relationship between exercise-induced changes in stress hormones (epinephrine, norepinephrine, and cortisol) ... Responses of cortisol are dependent on exercise intensity, and cortisol may be a key stress hormone playing a major role in regulating sICAM-1 and ...

"Female hormonal intelligence evolved to start early—and last a lifetime," Haselton writes. Women's hormone cycles embody half a billion years of evolutionary wisdom. She has argued against what she calls the centuries-old stereotype that hormonal conditions such as premenstrual syndrome, or PMS, ...

Thirty-something comic actors Nick Kroll and John Mulaney are well beyond adolescence, but they still remember the indignities, hormone rushes and confusion of puberty — and they channel it all in their animated comedy Netflix series, Big Mouth. The show centers on a group of junior high kids whose ...

Each month, as part of the menstrual cycle, hormones send chemical signals to cells in the womb lining to create conditions to support pregnancy. Fertilised eggs are extremely sensitive to changes in the womb lining, but the exact environment needed for healthy implantation is unknown. Researchers at ...

Every cell in your body responds to the hormone insulin, and if that process starts to fail, you get diabetes. In an unexpected finding, scientists at Joslin Diabetes Center have identified four viruses that can produce insulin-like hormones that are active on human cells. The discovery brings new possibilities ...

Talk to your doctor about treatments like birth control pills or hormone therapy (HT), the use of pills, patches or gel containing female hormones. Large long-term studies have shown that HT can help women with severe menopausal symptoms—but there are health risks, including blood clots and stroke.

Though the word “hormone” was first used in 1905, derived from the Greek meaning “to arouse or excite”, it was during that period leading into the war that the science of endocrinology developed. Hormones are the body's chemical messengers; they trigger activity in the body and regulate the function of ...