Researchers began by pinpointing the ovulation cycles of 41 undergraduate women involved in long-term heterosexual relationships.
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Throughout, levels of different hormones rise and fall - and body temperature rises around ovulation.
And the kind of man that women are attracted to can vary according to phases of the ovulation cycle.
There are several ways, he thinks, in which female hominids could have boosted their reproductive success by concealing their time of ovulation.
The closeness of their relationships got a boost just prior to ovulation.
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Some women may even develop OHSS during a pregnancy achieved following ovulation induction, as pregnancy itself causes a natural increase in HCG levels.
By suppressing ovulation, it actually reduces the risk of two types of cancer: ovarian, which affects the ovaries and endometrial, which affects the lining of the uterus.
Among the other possibilities considered some rejected, many not are that concealed ovulation gave females more freedom in their choice of mates, perhaps by reducing the frenzy of male competition.
The Plan B emergency contraceptive pill works by preventing ovulation or by blocking a potentially fertilized egg from becoming implanted in a woman's uterus, according to the drug's label.
One of the disadvantages of shunning fertility drug treatment is that ovulation may happen naturally over a weekend, when no one at the clinic is available to retrieve eggs.
The simplest theory is that these swellings dwindled to nothing after our ancestors began to walk upright, because the costs of advertising ovulation in this way came to outweigh any benefits.
Then at two different points in her monthly cycle at high fertility (just before ovulation) and at low fertility each woman was asked about the quality of her romantic relationship.
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The hearing heard how Mr Neale dismissed the complaints of a woman, referred to as Mrs B, with a history of endometriosis that the pain she was suffering were just "ovulation pains".
Chris Ford of the University of Bristol, one of Dr Farrow's co-authors, speculates that by preventing ovulation and the stresses that it puts on the reproductive system, Pill-using women may, in effect, be cheating time.
This treatment is more likely to cause symptoms of ovarian hyperstimulation than is the more common approach to inducing ovulation treatment with clomiphene (Clomid, Serophene), a medication that's given as a pill you take by mouth.
The drug works by using high doses of the female hormone progestin, which also is contained in birth-control pills, to prevent ovulation or block a potentially fertilized egg from becoming implanted in a woman's uterus, according to the drug's label.
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