Condoms are one of the common methods of contraception. In addition to preventing pregnancy, they are also effective in preventing the spread of sexually transmitted diseases. This article will introduce the role, success rate, selection, and usage of condoms. It will also provide important considerations during use and compare them with six other contraceptive methods, ensuring safe sexual practices.

1. How do Condoms Work?

Condoms, also known as prophylactics, are worn on the erect penis before engaging in sexual activity to prevent sperm from entering the female body, thus achieving contraceptive effects.

Furthermore, condoms effectively prevent the transmission of sexually transmitted diseases, making them a crucial tool for protecting health and safety during sexual activities. Their simple and effective use has made them a widely adopted contraceptive method.

2. What is the Success Rate of Condoms in Contraception and STD Prevention?

(a) Contraception Success Rate

According to statistics, the correct use of condoms has a success rate of over 95%. However, the proper use and fit of the condom size can influence the success rate of contraception.

(b) STD Prevention Success Rate

In addition to contraception, condoms can also be used to prevent sexually transmitted diseases such as HIV. It's essential to note that not all STDs can be 100% prevented, so maintaining vigilance during sexual activity and combining other protective measures is advised.

3. How to Choose the Right Condom?

Choosing the Right Size

The size of a condom is measured not by "length" but by "width," referring to "half the circumference of the condom."

Measuring the width is simple. Use a soft ruler to measure the circumference of the erect penis. Divide the obtained circumference by two to determine the width, which corresponds to the appropriate condom size.

Available condom sizes in the market include:

  • Small Size: Width 44-48 mm
  • Medium Size: Width 50-54 mm
  • Large Size: Width 56-58 mm
  • Extra Large Size: Width 60-66 mm

Choosing the right size ensures the safety and effectiveness of condom use.

Choosing the Right Material

Condoms are available in three materials: latex, polyurethane (PU), and polyisoprene (PI). Their differences lie in texture and thickness.

  • Latex: Soft and elastic, with thicker material. Some people may be allergic to latex, so consult a doctor if there is any reaction.
  • PU (Polyurethane): Thinner material with average elasticity, often used with lubricants.
  • PI (Polyisoprene): A new material, lightweight, and conducts heat rapidly.

Thickness is not a factor in condom breakage. When purchasing condoms, choose certified products and follow correct usage to ensure safe contraception.