Back to homeScience I (Biology) · Secondary Year 1 · Change subject
Start for free
Secondary 1 · Science I (Biology)
Prevention of sexually transmitted infections · Sexual and reproductive health

Taking Care of Your Body with Information

Ximena, a Secondary Year 1 student, hears at recess that "you'll learn about those things when you're older." But on her phone she finds five different answers to a single question. Who does she believe? And why is it better for her to know now, not later? At the end of the page we'll come back to her.

What is sexual and reproductive health?

Health is not just "not being sick." The World Health Organization understands it as physical, mental, and social well-being. Sexual and reproductive health applies that idea to your body, your emotions, your relationships, and your decisions.

It has three dimensions that support each other:

Three dimensions of sexual and reproductive health: body, emotions, and relationships, with information at the center Body hygiene, checkups Emotions respect, well-being Relationships consent Everything rests on reliable information

Concrete actions that help maintain it:

  • Daily hygiene and caring for your body.

  • Getting information from reliable sources: your teacher, science books, the doctor, the health center.

  • Going to the doctor with any question or discomfort, without embarrassment.

  • Respecting your decisions and those of others: no one should pressure you.

Practice★☆☆Not started
Explain in your own words what it means to have good sexual and reproductive health, and mention two concrete actions that help maintain it (for example, hygiene,…

Explain in your own words what it means to have good sexual and reproductive health, and mention two concrete actions that help maintain it (for example, hygiene, reliable information, or seeing a doctor with any question).

Solve

Why get informed starting in secondary school?

In adolescence your body changes because of hormones, and new questions begin. It is better to resolve them before you need the answer. Preventing means acting before the problem happens.

Two good arguments for getting informed early:

  1. Information lets you prevent. Many risks can be avoided if you know how they happen (infections, unplanned pregnancies) before facing them.

  2. Myths spread fast. Among friends and on social media there is a lot of misinformation; if you already know reliable facts, you can tell what is false.

Practice★☆☆Not started
A classmate says that about sexual health topics they "will learn when they are older". Write two arguments, based on prevention, that explain why it is a good idea to…

A classmate says that about sexual health topics they "will learn when they are older". Write two arguments, based on prevention, that explain why it is a good idea to get informed in middle school using reliable sources (a doctor, science books, health centers).

Solve

Reliable sources

Not all information is equally useful. Before believing something, ask yourself who is saying it and what evidence supports it.

Source Reliable? Why
Doctor, nurse, health center Yes Trained staff who rely on scientific evidence
Science books and teachers Yes Reviewed content
Websites of the Secretaría de Salud, IMSS, UNAM Yes Institutions with scientific backing
Recess rumors, chain messages No No evidence; they tend to exaggerate or make things up
Videos by people with no training Be careful They must be checked against a reliable source

Adolescents can go to the adolescent-friendly services at health centers (Secretaría de Salud, IMSS, ISSSTE): they offer free and respectful guidance.

What STIs are and why prevention matters

Sexually transmitted infections (STIs) are diseases caused by bacteria or viruses that are spread mainly through unprotected sexual contact. The abbreviation is "STI" (STD is a more casual usage).

Depending on the microorganism that causes them, what treatment can do changes:

  • Bacterial STIs (for example, syphilis and gonorrhea): they can be cured with antibiotics prescribed by a doctor.

  • Viral STIs (for example, HIV and human papillomavirus, HPV): in general they are not curable, but they can be controlled with medical treatment, and some can be prevented with vaccines (HPV, hepatitis B).

The most important thing: some STIs show no symptoms for a long time. A person can be infected, feel fine, and spread the infection without knowing it. That is why it is not enough to "wait until you feel something."

Timeline of an STI without symptoms: infection, years without symptoms, and the early detection that allows it to be treated in time Infection No symptoms (can spread it) Appear symptoms Early detection: medical checkup

That is why two actions are essential:

  • Prevention: getting informed and using protective measures (you will see them in the next sections).

  • Early detection: going for checkups and tests even if you feel nothing.

Practice★☆☆Not started
A classmate says that about sexual health topics they "will learn when they are older". Write two arguments, based on prevention, that explain why it is a good idea to…

A classmate says that about sexual health topics they "will learn when they are older". Write two arguments, based on prevention, that explain why it is a good idea to get informed in middle school using reliable sources (a doctor, science books, health centers).

Solve

Asking for help without embarrassment

Asking is not rude or something only "careless people" do: it is what responsible people do. You can go to:

  • A trusted adult (mom, dad, aunt or uncle, teacher).

  • The family doctor or the clinic (IMSS, ISSSTE, Secretaría de Salud).

  • The adolescent-friendly services.

If something worries you or someone pressures or hurts you, tell a trusted adult: your well-being matters.

Back to the beginning: Ximena should believe the doctor, the science book, or the health center, not five random opinions. And it is better for her to know now because being informed makes it possible to prevent problems before they happen.

Resumen

  • Sexual and reproductive health is well-being of the body, emotions, and relationships, with free decisions and respect.

  • Getting informed starting in secondary school allows you to prevent problems and tell myths from facts.

  • Reliable sources are doctors, health centers, science books, and health institutions.

  • STIs are infections caused by bacteria or viruses that are spread through unprotected sexual contact; many cause no symptoms for a long time.

  • Bacterial ones (syphilis, gonorrhea) are cured with antibiotics; viral ones (HIV, HPV) are controlled and some can be prevented with vaccines.

  • Prevention and early detection are essential; asking for help is a responsible decision.

See all the exercises in this section