In an essay on conspiracy theories originating in the Middle East, Daniel Pipes notes that " ive assumptions distinguish the conspiracy theorist from more conventional patterns of thought: appearances deceive ; conspiracies drive history ; nothing is haphazard ; the enemy always gains ; power, fame, money, and sex account for all.

* Reduced sex drive

There is scientific and political controversy regarding the continued inclusion of sex-related diagnoses such as the paraphilias ( sexual fetishes ) and hypoactive sexual desire disorder ( low sex drive to asexuality ).

Human sexual activity has sociological, cognitive, emotional, behavioral and biological aspects, including physiological processes such as the reproductive mechanism, the sex drive and pathology ; sexual intercourse and sexual behavior in all its forms ; and personal bonding and shared emotions during sexual activity.

Biological models of sex tend to view love as a mammalian drive, much like hunger or thirst.

Libido () refers to a person's sex drive or desire for sexual activity.

Biologically, levels of hormones such as testosterone are believed to affect sex drive ; social factors, such as work and family, also have an impact ; as do internal psychological factors, like personality and stress.

A person who has extremely frequent or a suddenly increased sex drive may be experiencing hypersexuality, but there is no measure of what is a healthy level for sex.

Males reach the peak of their sex drive in their teens, while women reach it in their thirties.

There are multiple things which affect human sex drive like stress, illness, pregnancy etc.

* Marked decrease or increase in sex drive

** Sex drive is dependent on androgen levels only in the presence of estrogen, but without estrogen, free testosterone level actually decreases sexual desire ( instead of increases sex drive ), as demonstrated for those women who have hypoactive sexual desire disorder, and the sexual desire in these women can be restored by administration of estrogen ( using oral contraceptive ).

Antiandrogenic drugs such as medroxyprogesterone ( also known as the long-acting contraceptive Depo Provera ) have been widely used as therapy in these men to reduce sex drive.

This drug is a synthetic hormone which may also lead to reduced sex drive.

According to his authorized biography, " his only sustaining relief from his unsatisfied sex drive was his even stronger desire to die.

While Freud's ideas were ignored and embarrassing to Viennese society, his work provoked a serious challenge to Victorian prudishness by providing the groundwork for the ideas of sex drive and infant sexuality.

" His mojo is the physical representation of his sex drive.

Because the nature of what is erotic is fluid, early definitions of the term attempted to conceive eroticism as some form of sensual or romantic love or as the human sex drive ( libido ); for example, the Encyclopédie of 1755 states that the erotic " is an epithet which is applied to everything with a connection to the love of the sexes ; one employs it particularly to characterize ... a dissoluteness, an excess ".

Long-term use can precipitate the following effects: negative impact on liver function, permanent tooth darkening ( of a greenish tinge ), susceptibility to ulcers, and diminished sex drive.

Krafft-Ebing considered procreation the purpose of sexual desire and that any form of recreational sex was a perversion of the sex drive.

What they discuss with dialectical seriousness is the degree to which sex can inspire the Muse.

To some extent the system can be considered a Gemeinschaft in which `` social-role occupancies are determined by birth, by attributes such as sex or caste, which are biologically or socially immutable ''.

Yet many psychologists and marriage counselors agree that domination of the sex relationship by one partner or the other can be unhealthy and even dangerous.

Hemmed in on the job and unable to assert himself, he uses the sex act so he can be supreme in at least one area.

In some cases, however, domination of the sex act by one partner can be temporary, triggered by a passing but urgent emotional need.

Any needy family living in San Francisco can obtain toys by writing to Christmas Toys, 676 Howard street, San Francisco 5, and listing the parent's name and address and the age and sex of each child in the family between the ages of 1 and 12.

** Congenital adrenal hyperplasias are genetic defects of enzymes involved in cortisol production and can affect sex characteristics of affected patients.

Despite having no experience with women, their other signature traits are a shared obsession with sex, and their tendency to chuckle and giggle whenever they hear words or phrases that can even remotely be construed as sexual or scatological.

" Wertham wrote, " Only someone ignorant of the fundamentals of psychiatry and of the psychopathology of sex can fail to realize a subtle atmosphere of homoeroticism which pervades the adventures of the mature ' Batman ' and his young friend ' Robin.

Many issues such as sex, narcotics and terrorism cannot or can very rarely be openly discussed in strips, although there are exceptions, usually for satire, as in Bloom County.

Chlamydia can be transmitted during vaginal, anal, or oral sex, and can be passed from an infected mother to her baby during vaginal childbirth.

The infection can be passed through vaginal, anal, or oral sex.

Chlamydia can be transmitted during vaginal, anal, or oral sex.

Similarly, a deeper understanding of developmental biology can foster greater progress in the treatment of congenital disorders and diseases, e. g. studying human sex determination can lead to treatment for disorders such as congenital adrenal hyperplasia.

" Duke Nukem 3D moves the ' shooter ' through pornography stores, where Duke can use XXX sex posters for target practice.

This third perspective allows the male audience to take the female character as his own personal sex object because he can relate himself, through looking, to the male character in the film.

Fellatio is also sometimes practiced when sexual intercourse can create a physical difficulty for a sex partner.

Chlamydia, human papillomavirus ( HPV ), gonorrhea, herpes, hepatitis ( multiple strains ), and other sexually transmitted diseases ( STDs ), can be transmitted through oral sex.

Estimates for this country explicitly take into account the effects of excess mortality due to AIDS ; this can result in lower life expectancy, higher infant mortality and death rates, lower population and growth rates, and changes in the distribution of population by age and sex than would otherwise be expected ( July 2010 est.

In humans, an ovum can carry only an X chromosome ( of the X and Y chromosomes ), whereas a sperm may carry either an X or a Y ; thus the male sperm determines the sex of any resulting zygote, if the zygote has two X chromosomes it will develop into a female, if it has an X and a Y chromosome, it will develop into a male.

The following demographic statistics are from the CIA World Factbook ().< ref name =" CIA_20110303 ">< sup >†</ sup > note: estimates for this country explicitly take into account the effects of excess mortality due to AIDS ; this can result in lower life expectancy, higher infant mortality and death rates, lower population and growth rates, and changes in the distribution of population by age and sex than would otherwise be expected < sup >‡</ sup > note: the preliminary 2011 numbers differ significantly from those of 2010, which were strongly influenced by the demographic effect of the January 2010 earthquake ; the latest figures more closely correspond to those of 2009 </ ref >

The fetus sex can be determined by day 70 of the gestation using ultrasound.

They can include bishōjo games that involve character driven plots, and can exist as sex simulations.