Theodoor Hendrik van de Velde (12 February 1873,

Leeuwarden Leeuwarden (; fy, Ljouwert, longname=yes /; Town Frisian: ''Liwwadden''; Leeuwarder dialect: ''Leewarden'') is a city and municipality in Friesland, Netherlands, with a population of 123,107 (2019). It is the provincial capital and seat of the ...

– 27 April 1937 near

Locarno , neighboring_municipalities= Ascona, Avegno, Cadenazzo, Cugnasco, Gerra (Verzasca), Gambarogno, Gordola, Lavertezzo, Losone, Minusio, Muralto, Orselina, Tegna, Tenero-Contra , twintowns =* Gagra, Georgia * Karlovy Vary, Czech Republic ...

in a plane crash) was a Dutch physician and gynæcologist who served as director at the Gynæcological Institute in

Haarlem Haarlem (; predecessor of ''Harlem'' in English) is a city and municipality in the Netherlands. It is the capital of the province of North Holland. Haarlem is situated at the northern edge of the Randstad, one of the most populated metropoli ...

Biography

His 1926 book ''Het volkomen huwelijk'' (''The Perfect Marriage'') made him an instant international celebrity. The book advocated knowledge and sensuality in erotic life. In Germany ''Die vollkommene Ehe'' reached its 42nd printing in 1932, in spite of the fact that it was placed on the list of forbidden books,

Index Librorum Prohibitorum The ''Index Librorum Prohibitorum'' ("List of Prohibited Books") was a list of publications deemed heretical or contrary to morality by the Sacred Congregation of the Index (a former Dicastery of the Roman Curia), and Catholics were forbidden ...

, by the

Roman Catholic Church The Catholic Church, also known as the Roman Catholic Church, is the largest Christian church, with 1.3 billion baptized Catholics worldwide . It is among the world's oldest and largest international institutions, and has played a ...

German-American German Americans (german: Deutschamerikaner, ) are Americans who have full or partial German ancestry. With an estimated size of approximately 43 million in 2019, German Americans are the largest of the self-reported ancestry groups by the Unite ...

sex therapist Sex therapy is a strategy for the improvement of sexual function and treatment of sexual dysfunction. This includes sexual dysfunctions such as premature ejaculation or delayed ejaculation, erectile dysfunction, lack of sexual interest or arousa ...

and

Holocaust survivor Holocaust survivors are people who survived the Holocaust, defined as the persecution and attempted annihilation of the Jews by Nazi Germany and its allies before and during World War II in Europe and North Africa. There is no universally accep ...

Dr.

Ruth Westheimer Karola Ruth Westheimer ( Siegel; born June 4, 1928), better known as Dr. Ruth, is a German-American sex therapist, talk show host, author, professor, Holocaust survivor, and former Haganah sniper. Westheimer was born in Germany to a Jewish fam ...

, known popularly as Dr. Ruth, has said that it was the first book on the subject of sex that she ever had an opportunity to read a few pages of, when she was a ten-year-old child in Frankfurt, Germany. In

Protestant Protestantism is a Christian denomination, branch of Christianity that follows the theological tenets of the Reformation, Protestant Reformation, a movement that began seeking to reform the Catholic Church from within in the 16th century agai ...

and

social democratic Social democracy is a political, social, and economic philosophy within socialism that supports political and economic democracy. As a policy regime, it is described by academics as advocating economic and social interventions to promote soci ...

Sweden, ''Det fulländade äktenskapet'' was widely known although regarded as pornographic and unsuitable for young readers long into the 1960s. The English translation, '' Ideal Marriage: Its Physiology and Technique'', was the best-known work on its subject for several decades, and was reprinted 46 times in the original edition, selling well over a half million copies. He is credited with showing in 1905 that women only

ovulate Ovulation is the release of eggs from the ovaries. In women, this event occurs when the ovarian follicles rupture and release the secondary oocyte ovarian cells. After ovulation, during the luteal phase, the egg will be available to be fertilized ...

once per

menstrual cycle The menstrual cycle is a series of natural changes in hormone production and the structures of the uterus and ovaries of the female reproductive system that make pregnancy possible. The ovarian cycle controls the production and release of eggs a ...

. This contributed to the improvement of

calendar-based methods Calendar-based methods are various methods of estimating a woman's likelihood of fertility, based on a record of the length of previous menstrual cycles. Various methods are known as the Knaus–Ogino method and the rhythm method. The standard day ...

birth control Birth control, also known as contraception, anticonception, and fertility control, is the use of methods or devices to prevent unwanted pregnancy. Birth control has been used since ancient times, but effective and safe methods of birth contr ...

, and later to the creation of other

fertility awareness Fertility awareness (FA) refers to a set of practices used to determine the fertile and infertile phases of a woman's menstrual cycle. Fertility awareness methods may be used to avoid pregnancy, to achieve pregnancy, or as a way to monitor gynec ...

systems.

References

1873 births 1937 deaths Dutch gynaecologists Dutch sexologists People from Leeuwarden {{Netherlands-med-bio-stub