Birth control, synthetic

Antibiotic revolution has provided long and healthy life to people. The life expectancy has almost doubled. The increased population has caused many social problems in terms of food resources, environmental issues, employment, etc. To control these problems, population is required to be controlled. This has lead to the concept of family planning. Antifertility drugs are of use in this direction. Birth control pills essentially contain a mixture of S)mthetic estrogen and progesterone derivatives. Both of these compounds are hormones. It is known that progesterone suppresses ovulation. Synthetic progesterone derivatives are more potent than... 

In addition to the many hundreds of steroids isolated from plants and animals, thousands more have been synthesized in pharmaceutical laboratories in a search for new drugs. Among the best-known synthetic steroids are the oral contraceptives and anabolic agents. Most birth-control pills are a mixture of two compounds, a synthetic estrogen, such as ethynylestradiol, and a synthetic progestin, such as norethindrone. Anabolic steroids, such as stanozolol and methandrostenolone (Dianabol), are synthetic androgens that mimic the tissue-building effects of natural testosterone. 

Birth control pills contain synthetic forms of (me or both of the female sex hormones. 7. 

Birth control pill that contains synthetic forms of both female sex hormones progesterone and estrogen. 

The most common form of the birth control pill is the combination pill, which consists of synthetic forms of two female sex hormones progesterone and estrogen. In some forms of the ccjmbination pill (multiphasic) the amount of synthetic progesterone or estrogen varies depending on where the w oman is in the menstrual cycle. The combination birth control pill works by suppressing ovulation (release of a... 

The combination birth control pill contains synthetic versions of the two female sex hormones estrogen and progesterone. 

Though highly effective at reducing the risk of pregnancy, the birth control pill has been linked to such side effects as increased risk of heart attack and stroke. Anabolic steroids are generally synthetic versions of the male sex hormone testosterone and are used to promote the development of muscle mass and to enhance athletic performance. 

T Combination birth control pills contain synthetic... 

Progestin pill Birth control pill that contains only progestin, a synthetic progesterone (Chapter 14). 

Synthetic estrogens Birth control, postmenopausal therapy 17 /3-ethinylestradiol 64... 

One of the most revolutionary medical developments of the 1950s was the worldwide introduction and use of the pill. The development of synthetic analogs of the female sex hormones made reliable birth control available to women for the first time. The ongoing search for an equivalent birth control pill for use by men has not yet been equally successful. 

In addition to the alkynes found in nature, many synthetic alkynes (prepared in the laboratory) are of particular interest. One such example is ethynylestradiol, found in many birth control formulations. This synthetic oral contraceptive elevates hormone levels in women and prevents ovulation. The presence of the triple bond renders this compound a more potent contraceptive than its natural analogue, which lacks a triple bond. The effect of the triple bond is attributed to the additional structural rigidity that it imparts to the compound (as described in the box on molecular rigidity). 

During pregnancy, ovulation is inhibited by the release of estrogens and progestins from the placenta and ovaries. This process is mimicked by most birth control formulations, which generally contain a mixture of a synthetic estrogen (such as ethynyl estradiol) and a synthetic progestin (such as norethindrone). 

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