Make girls'
health, make sense.

Rerein is the missing translation layer between girls, their bodies and the adults trying to support them.

We take the confusing health science terminology about periods, hormones, body changes and body image, and translate it into language girls actually use, understand and relate to.

👄 Girls Health & Wellbeing, Translated.

We Translate Textbook Terminology into Girl Talk

1. What is actually happening?

Not having to Google: “I would like to understand fluctuations in ovarian steroid hormones.”

More like: “how have my boobs doubled in size within 2 days?” 😂 (much better place to start).

2. We go and get the complicated bit 🔍

• What’s happening.
• Why it’s happening.
• How that might show up.
• What could help.

(we take the science seriously).

3. And translate it into relateable language 👄

We try and understand what might help, what you can try, what you might notice next and when something deserves more support.

Until eventually... “Ahh."

Girls should grow up confident in their bodies, not confused by them.

Rerein started with a thought: why are we taught so much about our bodies without ever really being taught how to understand living in one?

So much health information already exists, but that doesn’t mean it lands.

Most girls learn about their bodies far too late (usually after something's already gone wrong). We believe they need better translation.

Our bodies are doing extraordinary things 24/7.
The education should finally match them.

That’s what we want to change 🩷

the Body OS phone screen

We translate the health information into words that actually make sense in real life.

Body OS is her own interactive guide to growing up. Periods, cycles, hormones, food, fuel, body image and all the “wait, is this normal?” questions, translated into language she recognises, in a format that feels like her phone, not a biology lesson.

  • Have a proper look around before you sign her up
  • Interactive, age-appropriate and completely jargon-free
  • New content, classes and translations added every month
  • One simple monthly or annual subscription (cancel anytime!)
Explore Body OS → Sign up
🔍 Textbook terminology → 👄 Girl Talk
Textbook terminology

“Progesterone rises after ovulation to prepare the endometrium for possible implantation.”

Girl Talk

Ovulation: done 🥚 (an egg has been released from your ovaries)

Progesterone: getting your uterus ready for a potential pregnancy (just in case 👶)

No diagrams from a 1997 textbook.

Just the actual answers to: what is a period, why does my mood do that, and why does the same outfit feel different today to yesterday.

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Girls Glossary

A list of words nobody explained properly, translated into what they actually feel like. "

Find out more →
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Hormone HQ

Meet the hormones behind moods, growth, skin, periods, and more.

Find out more →
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Eating Disorder Support

Whether you’re 14 and drowning in school and social media or 34 and untangling your 'healthy era' this space is for you.

Find out more →

Rerein is the missing translation layer between girls, their bodies and the adults trying to support them.

Schools say: “We’re legally expected to teach more of this, but teachers don’t necessarily know how.”

Parents say: “I want to help her, but I don’t know what to say or when to say it.”

Girls say: “Please just tell me whether this weird thing happening to my body is normal.”

Existing resources say: “Menstruation is the shedding of the endometrial lining...”

Rerein translates the health information girls are given into words that actually make sense in real life.