HORMONAL METHODS OF BIRTH CONTROL: THE PILL
In the 1930s, research was launched to find a hormonal treatment to alleviate menstrual pain. The search led to the invention of hormonal contraception. The first hormonal contraceptive was the Pill. It became available in 1960 and is now the most popular method of reversible contraception in the United States.
Thirty-one years later, American women were offered another hormonal option—implants inserted under the skin to provide five years of contraception. Two years after the introduction of implants, an injectable method that lasts 12 weeks became available.
Throughout history, millions of women dreamed that they might live their lives free from the burdens of unintended pregnancy. While there still remains a very real need for more and better contraceptive options, the introduction of hormonal contraception changed the lives of women forever by offering them safe and highly effective methods with which to control their fertility.
The Pill is a reversible method of birth control that is available only by prescription. It is a monthly series of pills taken once a day. The active ingredients are synthetic hormones like those produced by the body to regulate the menstrual cycle. Combined oral contraceptives contain both estrogen and progestin. Mini-pills contain progestin only.
How the Pill Works
Combined pills keep the ovaries from releasing eggs (ovulation). Mini-pills can also prevent ovulation. They also work by thickening the cervical mucus. This prevents the sperm from joining with the egg. Both types of pills can also prevent fertilized eggs from implanting in the uterus.
Effectiveness of the Pill
The Pill is one of the most effective reversible methods of birth control available to women in the United States. Of every 100 women who use the Pill, only three will become pregnant during the first year of typical use. Women who take the Pill correctly every day have less than a 1 percent chance of getting pregnant.
Birth control pills work best if taken at about the same time every day for the full monthly series. Pregnancy can happen if an error is made in using the Pill—especially if:
• pills are started too late in the cycle
• two or more pills are missed in a row
• pills are taken in the wrong order
The Pill may be less effective in preventing pregnancy if taken with other medicines such as those that control seizures or tuberculosis. Talk to your clinician about what to do.
The Pill provides no protection against sexually transmitted infections.
Advantages of Using the Pill
The Pill is convenient to use. Women who use the Pill have:
• more regular periods
• less menstrual flow
• less iron-deficiency anemia
• fewer ectopic (tubal) pregnancies
• less pelvic inflammatory disease (PID)
• less acne
• less premenstrual tension
• less rheumatoid arthritis
The Pill offers significant protection against:
• ovarian and endometrial cancers—risk reduction increases with each year of use, up to 80 percent
• noncancerous breast tumors and ovarian cysts
Who Can Use the Pill
Most women can take the Pill safely. You should not use the Pill if you are over 35 and smoke more than 15 cigarettes a day, especially if you are greatly overweight.
You shouldn’t use the Pill if you have unexplained vaginal bleeding or if you ever had:
• cancer of the breast or uterus
• blood clots in the veins or lungs
• skin cancer called malignant melanoma that spread to another part of the body
You may need special tests to see whether you should take the Pill if you have had certain medical conditions such as liver disease, diabetes (even if it only occurred during pregnancy), high blood pressure, high cholesterol levels, or if there is a history of blood clots in your family.
For all women, except those who smoke more than 15 cigarettes a day and are over 35, the newer low-dose pills have fewer side effects and complications than pregnancy and are much safer than pregnancy.
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