Category Archives: biology-Endocrine

Biology – enodcrine: female menstrual cycle and related changes and other biorhythms.

Circadian rhythm chaos: a new breast cancer marker. Int J Fertil Womens Med. 2001 Sep-Oct;46(5):238-47. Keith LG, Oleszczuk JJ, Laguens M. Department of Obstetrics and Gynecology, Northwestern University Medical School, Chicago, Illinois, USA. Abstract The most disappointing aspect of breast cancer treatment as a public health issue … Continue reading

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Why sisters and friends share simultaneous menstrual cycles

by Megan Stoddard
October 1, 2010

If women spend a lot of time together, are emotionally close, or both, they are likely to find themselves sharing simultaneous menstrual cycles. If they did not have simultaneous menstrual cycles in the beginning, they will after a few months. Each woman’s cycle will move by a few days until they are getting their periods within, at most, three or four days of each other. Continue reading

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Women’s cholesterol levels vary with phase of menstrual cycle

NIH News
National Institutes of Health
August 10, 2010
NIH findings suggest a need to consider phase of cycle when measuring cholesterol

National Institutes of Health researchers have shown that women’s cholesterol levels correspond with monthly changes in estrogen levels. This natural variation, they suggest, might indicate a need to take into account the phases of a woman’s monthly cycle before evaluating her cholesterol measures Continue reading

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Leslie Botha on Progressive Radio Network: Aug. 11, 2010 6pm New York time

Mitchell Rabin of A Better World Radio on the Progressive Radio Network hosts Leslie Carol Botha on Aug. 11, 2010 6pm New York time. Leslie Botha is a Women’s Health Educator, author, publisher, broadcast journalist and an internationally recognized expert … Continue reading

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Menstrual Cycle Affects Hemodynamic Response to Tracheal Intubation

Released: 8/2/2010 11:00 AM EDT
Source: International Anesthesia Research Society (IARS)

Hormone Levels Affect Response to Intubation
Led by Dr. Volkan Hancı of Zonguldak Karaelmas University, Turkey, the researchers designed a study to determine the effect of the menstrual cycle on the hemodynamic response to tracheal intubation in 62 healthy women. Continue reading

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Effect of the Menstrual Cycle and Hormonal Contraceptives on Human Papillomavirus Detection in Young, Unscreened Women

American College of Obstetrics and Gynecology
July 2010

OBJECTIVE: To estimate the effect of the menstrual cycle
and oral contraceptive pill (OCP) use on the prevalence,
incidence, and persistence of human papillomavirus. Continue reading

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Circadian clockwork takes unexpected turns

One group of neurons follow a different pattern than others that guide the brain’s master clock

Science News
By Tina Hesman Saey
Web edition : Thursday, October 8th, 2009

Cells in the suprachiasmatic nuclei, a tiny group of neurons in the hypothalamus, serve as a master clock to regulate the body’s circadian rhythms — daily fluctuations in hormone release, body temperature, blood pressure and other processes — and help set meal and bed times. The cells follow a predictable daily pattern, firing electrical signals faster during the day and quieting at night. Or so scientists thought.
Continue reading

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