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Navigating the Seas of Contraception: A Comprehensive Guide

Dr Geraldine Jahn
Obstetrician and Gynaecologist

In a world where reproductive choices are a fundamental aspect of individual freedom, contraception plays a pivotal role. The ability to plan when, or if, to start a family is empowering. However, with an array of contraceptive options available, choosing the right one can be a daunting task. In this article, we will explore various types of contraception, their mechanisms of action, pros, and cons, to help you make an informed decision about your sexual and reproductive health.

Contraception Options and Their Mechanisms of Action

1. Barrier Methods

  • Condoms
    • Mechanism of Action: Condoms create a physical barrier that prevents sperm from reaching the egg. They also provide a crucial defence against sexually transmitted infections (STIs).
    • Pros: Inexpensive, easily accessible, no hormonal side effects.
    • Cons: Can reduce spontaneity, may break or slip.
  • Diaphragms and Cervical Caps
    • Mechanism of Action: These devices block the cervix, preventing sperm from entering the uterus.
    • Pros: Reusable for multiple acts of intercourse, hormone-free.
    • Cons: Requires proper fitting, less effective than other methods.

2. Hormonal Methods

  • Birth Control Pills
    • Mechanism of Action: Birth control pills contain synthetic hormones that suppress ovulation and thicken cervical mucus, making it difficult for sperm to reach the egg.
    • Pros: Highly effective when taken as directed, can improve menstrual symptoms, and reduce the risk of ovarian and endometrial cancers. Can improve acne and regulate periods.
    • Cons: Requires daily commitment, potential side effects.
  • IUDs (Intrauterine Devices)
    • Mechanism of Action: IUDs, such as the hormonal Mirena or the copper T, disrupt sperm movement and affect the uterine lining, preventing fertilization.
    • Pros: Long-lasting protection (5-10 years), low maintenance, and can be removed at any time.
    • Cons: Requires a healthcare provider’s insertion, may cause discomfort initially.
  • Patch:
    • Mechanism of Action: The contraceptive patch releases hormones through the skin into the bloodstream, preventing ovulation.
    • Pros: Only requires weekly application, can improve menstrual symptoms and regulate periods.
    • Cons: Might cause skin irritation.
  • Vaginal Ring:
    • Mechanism of Action: The vaginal ring works similarly to birth control pills but is inserted into the vagina and releases hormones directly into the body.
    • Pros: Only needs to be replaced once a month, discreet.
    • Cons: Might cause initial vaginal discomfort.

3. Long-Acting Reversible Contraceptives (LARCs)

  • Implants:
    • Mechanism of Action: Implants are small rods placed under the skin that release hormones, preventing ovulation.
    • Pros: Highly effective for up to three years, no need to remember daily, can be removed anytime.
    • Cons: Requires a healthcare provider’s insertion, potential side effects
  • Depo-Provera (The Shot)
    • Mechanism of Action: Depo-Provera is an injection of synthetic hormones that prevents ovulation.
    • Pros: Only required every three months, discreet, may reduce the risk of endometrial cancer.
    • Cons: Requires regular injections, potential side effects.

4. Permanent Methods

  • Tubal Ligation (Female Sterilization):
    • Mechanism of Action: Tubal ligation involves surgically removing the fallopian tubes, preventing the egg from meeting sperm. This is done through minimally invasive surgery. (laparoscopically, “key-hole surgery”).
    • Pros: Permanent, highly effective, no long-term maintenance required.
    • Cons: Non-reversible, surgical procedure.
  • Vasectomy (Male Sterilization):
    • Mechanism of Action: Vasectomy involves cutting or sealing the vas deferens, preventing sperm from reaching semen.
    • Pros: Permanent, relatively simple procedure, highly effective.
    • Cons: Non-reversible, requires recovery time.

5. Emergency Contraception

  • Morning-After Pill:
    • Mechanism of Action: Emergency contraception prevents pregnancy by delaying or inhibiting ovulation.
    • Pros: Prevents pregnancy after unprotected sex, widely available.
    • Cons: Most effective when taken as soon as possible, not a regular method.

Here are some common contraception myths

  • Myth 1: Birth Control Pills Make You Gain Weight
    • Fact: Many people believe that birth control pills lead to weight gain, but numerous studies have shown that there is no substantial link between birth control pills and weight gain. Any perceived weight gain is often due to other factors such as lifestyle changes or natural fluctuations in weight.
  • Myth 2: Contraception Is Only for Women
    • Fact: Contraceptive methods are not exclusive to women. Male condoms and vasectomy are examples of male contraceptive options. It’s essential for both partners to be actively involved in discussions about contraception.
  • Myth 3: You can’t Get Pregnant While Breastfeeding
    • Fact: While breastfeeding can suppress ovulation and fertility for some individuals, it is not a fool proof method of contraception. The effectiveness of breastfeeding as a contraceptive method varies from person to person, and it’s not reliable for everyone.
  • Myth 4: All Birth Control Methods Protect Against STDs
    • Fact: Barrier methods like condoms are the only contraceptive methods that offer protection against sexually transmitted diseases (STDs). Other methods, like birth control pills or IUDs, primarily provide protection against pregnancy and do not prevent the transmission of STDs.
  • Myth 5: Emergency Contraception Is the Same as an Abortion Pill
    • Fact: Emergency contraception, often referred to as the “morning-after pill,” is not the same as the abortion pill (medication abortion). Emergency contraception prevents pregnancy by delaying or inhibiting ovulation and is not effective if a pregnancy has already occurred. It does not terminate an existing pregnancy.
  • Myth 6: Birth Control Methods Are 100% Effective
    • Fact: No contraceptive method is 100% effective. While some methods, like IUDs and implants, come close, there is always a small chance of pregnancy. Proper and consistent use of contraception increases effectiveness.
  • Myth 7: You Can Only Use One Contraceptive Method at a Time
    • Fact: In some cases, combining multiple contraceptive methods can enhance protection. For instance, using both condoms and a hormonal method can provide a double barrier against pregnancy and STDs.

Contraception is not a one-size-fits-all solution. Your choice should align with your lifestyle, health considerations, and relationship dynamics. It’s crucial to consult with a healthcare provider to determine the most suitable method for you. Whether you prefer the convenience of hormonal options, the reliability of long-acting methods, or permanent solutions, the world of contraception offers a variety of choices to empower individuals in their reproductive journey.

For personalized contraceptive care and guidance, you can reach out to us at 012 652 9361 or We are here to support you in making the right choice for your sexual and reproductive health needs.

As you embark on this journey of informed decision-making, remember that contraceptive choices are about more than just prevention; they are about taking control of your reproductive destiny and embracing a future that aligns with your desires and aspirations.

Dr Jahn operates at both Mediclinic Midstream and Cure Day Hospital Midstream.

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