News tagged with hormone

Related topics: breast cancer · women · plants · estrogen · protein

Stress hormone linked to mood and hippocampus volume

Individual differences in the pattern of release of the hormone cortisol in response to a stressful experience reveal how stressed a person actually feels, suggests a study of healthy women published in The Journal of Neuroscience. ...

13 hours ago
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How much sleep do you really need?

(HealthDay)—Health initiatives typically center on diet and fitness. But the American Academy of Sleep Medicine and the Sleep Research Society state that getting enough sleep is just as important as eating right and exercising.

Jul 20, 2017
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Fluctuating hormones can affect women's sleep

As women, we know that hormones can wreak havoc on our moods and appetites, but did you know that they can also play a huge role in how many zzz's we catch each night? "Insomnia is much more common in women than men," says ...

Jul 20, 2017
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Hormone

Hormones (from Greek ὁρμή - "impetus") are chemicals released by cells that affect cells in other parts of the body. Only a small amount of hormone is required to alter cell metabolism. It is essentially a chemical messenger that transports a signal from one cell to another. All multicellular organisms produce hormones; plant hormones are also called phytohormones. Hormones in animals are often transported in the blood. Cells respond to a hormone when they express a specific receptor for that hormone. The hormone binds to the receptor protein, resulting in the activation of a signal transduction mechanism that ultimately leads to cell type-specific responses.

Endocrine hormone molecules are secreted (released) directly into the bloodstream, while exocrine hormones (or ectohormones) are secreted directly into a duct, and from the duct they either flow into the bloodstream or they flow from cell to cell by diffusion in a process known as paracrine signalling.

This text uses material from Wikipedia, licensed under CC BY-SA

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