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What’s the difference between STIs and STDs?

Writer: Trusti TeamTrusti Team

Updated: Feb 26

Let’s talk about STIs and STDs. Yes, it’s the conversation no one wants to have, but everyone needs to. And hey, it’s not all doom and gloom—understanding the difference is actually pretty empowering. So buckle up; we’re about to take a slightly cheeky, definitely educational dive into the world of sexually transmitted health terms.


The Terminology: STI vs. STD

Now, there is a bit of a generational divide between the familiarity of the term STI vs. STD. If you’re over the age of 40, you’re likely familiar with the latter. So why the change in terminology?


First things first: what’s the difference? Well, STD stands for sexually transmitted disease, while STI swaps disease for ‘infection’. The key difference between an infection and a disease is that they refer to different stages of development. An infection is the primary stage where pathogens merely enter the body. A disease occurs when this infection damages the cells in the body. So, all STDs start as STIs, but not all STIs necessarily become STDs. It may seem convoluted, but the distinction is important.


Why the Shift Toward “STI”?

Public health experts have been sliding into STI’s DMs more than STD’s lately. Here’s why:

  • Accuracy: The term “infection” covers both the silent type and the ones that go full drama queen. Many people with STIs don’t have symptoms, so it’s more precise.

  • Stigma Reduction: Let’s be honest, “disease” sounds way scarier and judgmental. “Infection” is a little more neutral, like saying “you’re perspiring” instead of “you’re sweating buckets.”

  • Focus on Prevention: “STI” encourages catching things early, before the rager starts. Prevention is way cooler than cleanup duty.


Examples of STIs and STDs

Here’s a helpful cheat sheet to make sense of it all:

  1. Chlamydia:

    • STI: Many people have it with zero symptoms.

    • STD: If untreated, it can evolve into pelvic inflammatory disease (PID) or infertility.

  2. Human Papillomavirus (HPV):

    • STI: Most people with HPV never know they have it.

    • STD: Certain strains can cause genital warts or progress to cancers.

  3. Gonorrhea:

    • STI: Quiet and often symptom-free at first.

    • STD: Left untreated, it turns into PID or epididymitis.

  4. HIV (Human Immunodeficiency Virus):

    • STI: No symptoms at all.

    • STD: Without treatment, HIV progresses to AIDS, a serious condition.


Data on STIs and STDs

Now, let’s throw some numbers at you—because nothing says sexy like stats:

  • CDC Data: In 2023, the CDC reported over 2.4 million combined cases of chlamydia, gonorrhea, and syphilis in the U.S. Chlamydia led the charge with over 1.6 million cases.

  • PHAC Data: In Canada, chlamydia also holds the top spot, with more than 100,000 cases annually. Clearly, it’s trending on both sides of the border.


Why Does the Difference Matter?

This isn’t just a lesson in semantics. Understanding the distinction can actually:

  1. Help with Testing and Diagnosis:

    • Regular STI testing catches issues before they escalate. It’s like spotting a crack in the windshield before it’s a giant spiderweb.

  2. Guide Treatment:

    • Many bacterial STIs (like chlamydia and gonorrhea) are easily treated with antibiotics. Viral STIs (like herpes or HIV) need ongoing management to keep them from crashing the party.

  3. Shape Public Health Strategies:

    • Using “STI” reduces stigma and gets more people to seek testing and treatment. Everyone wins—especially your health.


Common Myths About STIs and STDs

Let’s bust a few misconceptions while we’re at it:

  1. Myth: No symptoms = no problem.

    • Fact: Many STIs are silent operators. Get tested even if you’re feeling fine.

  2. Myth: Only people with multiple partners get STIs.

    • Fact: STIs don’t care if you’re a one-partner kind of person. Protection is key.

  3. Myth: Condoms are a 100% guarantee.

    • Fact: They’re great, but not foolproof. Skin-to-skin contact STIs, like HPV, herpes or syphilis, can be transmitted without any form of intercourse.


Prevention: The Best Practice

Prevention is key in reducing the spread of STIs. Here are some steps to minimize risk:

  1. Use Protection: Consistent use of condoms and dental dams significantly reduces the risk of STI transmission.

  2. Vaccinate: Vaccines for HPV and hepatitis B offer excellent protection.

  3. Communicate: Open and honest discussions with sexual partners about STI testing and sexual health is healthy for relationships, and helps to create mutual responsibility.

  4. Get Tested: Regular testing ensures early detection and treatment. If you’re sexually active with multiple partners, get tested every three months.


Don’t ever think you can outsmart STI’s – they’ve been around for hundreds of years, we guarantee that they’re smarter than you.


Final Thoughts

In the end, STIs and STDs are two sides of the same coin. Understanding the difference can help you stay proactive about your sexual health and on top of the latest politically-correct health terminology.


Ready to take control of your sexual health? With Trusti, you can order an STI testing kit online, test privately at home, and get your results quickly. Stay informed, stay safe, and take charge of your health today!

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