News tagged with hormone

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

ENDO: HRT may not be as risky as once thought

(HealthDay)—Hormone replacement therapy for women may not be as potentially risky as previously thought, a new Mayo Clinic review contends. The findings were scheduled to be presented at the annual meeting ...

Mar 09, 2015
popularity 6 comments 0

Oxytocin nasal spray causes men to eat fewer calories

A synthetic nasal formulation of the hormone oxytocin reduced caloric intake in healthy men, particularly consumption of fatty foods, after a single treatment, a new study finds. The results, to be presented Sunday at The ...

Mar 05, 2015
popularity 19 comments 0

When I'm 64—I'll still have hot flashes?

Some 40% of women 60 to 65 years old still have hot flashes. For many, the hot flashes are occasional and mild, but for some, they remain really troublesome, shows a new study just published in Menopause, the journal of The ...

Mar 02, 2015
popularity 7 comments 1

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