Apps send intimate user data to Facebook: report
A news report Friday said many smartphone apps were sending highly personal information such as menstrual cycles and body weight to Facebook, without notifying users.
A news report Friday said many smartphone apps were sending highly personal information such as menstrual cycles and body weight to Facebook, without notifying users.
Internet
Feb 22, 2019
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454
(Phys.org) -- For years biologists have puzzled over how it is that elephants are able to maintain such long pregnancies, which typically run to nearly two years. While many theories have been tossed around, no one really ...
There is no doubt that modern contraception has enabled women to have unprecedented control over their own fertility. However, is it possible that the use of oral contraceptives is interfering with a woman's ability to choose, ...
Evolution
Oct 7, 2009
21
0
(Phys.org) —A diverse team of international researchers has found that women with stronger immune systems don't necessarily have prettier faces than women whose immune system is not so strong. In their paper published in ...
(Phys.org)—A team of researchers working at Monash University in Australia has found an example of a rodent that has a human-like menstrual cycle. As the team notes in their paper uploaded to the preprint server bioRxiv, ...
Within the variety of announcements made at the Worldwide Developers Conference this week, Apple revealed it will be adding new menstrual tracking software to the Health app with the upcoming iOS 13 and Watch OS 6 update.
Consumer & Gadgets
Jun 10, 2019
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4
RIKEN researchers have discovered how biological rhythms influence hair growth in mice. This finding could pave the way for novel anti-aging treatments in humans.
Cell & Microbiology
Nov 10, 2023
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126
If cramps, mood swings and ice cream binges are what come to mind when you hear the hackneyed phrase that time of the month, think again. Researchers at Concordia University are taking a new look at the menstrual cycle by ...
Social Sciences
Jul 10, 2012
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0
A new mathematical method can help to predict a couple's chances of becoming pregnant, according to how long they have been trying.
Mathematics
Oct 4, 2012
0
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New research has revealed that sexual arousal leads to an immediate preference in short-term mating in men over more long-term committed relationships, such as marriage.
Social Sciences
Dec 16, 2022
0
54
The menstrual cycle is a cycle of physiological changes that occurs in fertile females. Overt menstruation (where there is blood flow from the vagina) occurs primarily in humans and close evolutionary relatives such as chimpanzees. Females of other species of placental mammal undergo estrous cycles, in which the endometrium is completely reabsorbed by the animal (covert menstruation) at the end of its reproductive cycle. This article focuses on the human menstrual cycle.
The menstrual cycle, under the control of the endocrine system, is necessary for reproduction. It may be divided into three distinct phases: menstruation, the follicular phase and the luteal phase. Ovulation defines the transition from the follicular phase to the luteal phase. The length of each phase varies from woman to woman and cycle to cycle, though the average menstrual cycle is 28 days. Hormonal contraception interferes with the normal hormonal changes with the aim of preventing reproduction.
Stimulated by gradually increasing amounts of estrogen in the follicular phase, menses slow then stop, and the lining of the uterus thickens. Follicles in the ovary begin developing under the influence of a complex interplay of hormones, and after several days one or occasionally two become dominant (non-dominant follicles atrophy and die). Approximately mid-cycle, 24-36 hours after the Luteinizing Hormone (LH) surges, the dominant follicle releases an ovum, or egg in an event called ovulation. After ovulation, the egg only lives for 24 hours or less without fertilization while the remains of the dominant follicle in the ovary become a corpus luteum; this body has a primary function of producing large amounts of progesterone. Under the influence of progesterone, the endometrium (uterine lining) changes to prepare for potential implantation of an embryo to establish a pregnancy. If implantation does not occur within approximately two weeks, the corpus luteum will involute, causing sharp drops in levels of both progesterone and estrogen. These hormone drops cause the uterus to shed its lining in a process termed menstruation.
In the menstrual cycle, changes occur in the female reproductive system as well as other systems (which lead to breast tenderness or mood changes, for example). A woman's first menstruation is termed menarche, and occurs typically around age 12. The end of a woman's reproductive phase is called the menopause, which commonly occurs somewhere between the ages of 45 and 55.
This text uses material from Wikipedia, licensed under CC BY-SA