安全期避孕的缺陷
安全期避孕的三種方法（基礎體溫法、日期計算法和宮頸黏液法）都需要專家的專業指導，不應該自行去盲目嘗試。然而，甚至合併運用和在醫生的幫助下運用，它們也不太可靠。安全期避孕對那些最長月經週期與最短月經週期相差10天以上的婦女就根本不適用。生理不適和情感波動可能改變月經週期的時程，況且某些女子在性交後發生反射性的排卵也不是不可能的。安全期避孕除了它的可靠性缺陷以外，它還有使性交的安排屈從於日曆和體溫計的缺陷。不過，許多人因宗教信仰的原因使用安全期避孕，因為，目前這是天主教惟一認可的避孕方法。 |
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Contraception |
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Methods
of Contraception: Contraceptive
Methods for Women：“Rhythm”
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Disadvantages
Each of these three versions of the rhythm method (basal temperature, calendar, and Billings method) requires expert professional guidance. No woman should try them on her own. However, even in combination and with the help of a doctor they are not very reliable. The rhythm method does not work at all for women whose longest cycle differs more than 10 days from the shortest. Physical and emotional problems can change the length of cycles, and there is also the possibility that some women may ovulate in response to coitus itself. Apart from its lack of reliability, the method also has the disadvantage of subjecting coitus to the rule of calendar and thermometer. Nevertheless, many people use the rhythm method for religious reasons, since at present it is the only method of contraception approved by the Catholic church. |
