Understanding Your First Period: What Every Girl Should Know

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  • 9/17/2026
  • Lydia Hall

Medical Reviewer: Dr. Paulinus Essien (MD) 

BHI Editorial Team 

Envision a young adolescent girl walking home from school, distraught, and using her school bag to conceal her rear view. You might presume she has been abused. But no, she was not. She has just entered a new developmental phase of adolescence and is experiencing her first menstruation, unprepared, ill-equipped, and overwhelmed by what is happening to her body.


What is Menarche?

Menarche is the First menstrual period in a female adolescent and is a notable developmental milestone in girls. It unravels the beginning of reproductive capacity, maturity, and wellness. Menarche usually occurs between the ages of 10 and 16, with the average age of 12 years, 4 months. It is indeed a normal formative hallmark.

According to World Health Organization (2024), pre-menarche preparedness is significantly low globally. They reported that only 39% of schools provide menstrual health education and many young people scored below 50% on basic menstrual knowledge. Furthermore, menstrual products are unavailable, and many cannot afford them, for example in sub-Sahara Africa, only 1 in 8 schools provide free or for-sale menstrual products. This is the reason we are making this clarion call for you to join us as a parent or guardian, corporate organization, community leader and as an individual to educate the girl child about her first period and also donate to this course to alleviate period poverty.

The Female adolescents’ Misconception of Menstruation

It is typical for girls to associate diverse negative physical and psychological changes with menstruation which reflects misconception, ignorance and limited menstrual literacy. This highlights why some girls’ attitude and expectations about menstruation are negatively skewed, thereby contributing to self-surveillance, low-self-esteem, body-shaming and lack of agency in making sexual decisions such as confidently saying ‘NO’ to sexual predators. Peer pressure at this phase contributes to anti-social behavior, deviance, and school absence, which may result in teenage pregnancy and school dropout. Some harbor fear of being different from their peers. Lack of first menstrual literacy is the foundation of these misconceptions and divergence.  

What are the determinants of menarcheal Age?

It is crucial to teach the girl child about menarche because several factors influence the menarcheal age of every female adolescent. These determinants include general health, nutritional status, socioeconomic conditions, environmental factors/stressors, physical activity (exercise), genetics, and family size. As a parent or guardian, it is important for you to know these determinants because it will.

  • Help you protect your child from long-term health risks that are linked to early puberty. For example, getting a period before age 12 is associated with higher risks of adult obesity, heart disease, type 2 diabetes, and certain cancers.
  • Help you provide emotional support to your child. The psychological wellbeing of your child at this phase comprises of her emotional health, self-esteem and coping skills, thus with this knowledge, you will be effectively preparing your child emotionally, and alleviate the risk of experiencing distress, academic and social pressure, and confusion. 
  • Help you provide evidence-informed awareness and menstrual education on lifestyle changes to enhance or modify habits that
    support balanced hormones
  • Help you have a safe, loving home and school environment to help your female adolescent have interpersonal and critical thinking skills, including providing safe menstrual products timely.  
  • Help you know to seek medical care since early menarche is associated with physical and psychosocial problems such as elevated blood pressure, anxiety/depression, glucose intolerance, early sexual intercourses, suicidal behavior and substance abuse in adolescents, which can result in several health problems in adulthood. 

How does Menarche Occur?

The occurrence of menarche is painless and begins without notable warning. This   may the reason why female adolescents feel awkward when it occurs, especially those without menstrual literacy. During first menstrual cycles, the release of ovaries may vary in length and flow. When your adolescent experience absence of normal periods, it is unrelated to pregnancy and termed amenorrhea. But when menarches occur too early, too late or not at all, seek medical help as these scenarios have future adverse outcomes. Always remember that menarche is said to be early if it happens at or before age 10 and late if it occurs at or later than 15 years

Practical To do list

  • Focus on proactive menstrual education, using practical necessities such as menstrual care supplies and emotional validation to prepare your child for first menarche to reduce fear, anxiety and confusion.
  • Focus on everyday management  and practicalities such as how to use, open and dispose menstrual products rather than your child’s anatomy and reproduction. 
  • Talk about the subjective experience, which includes what a period feels like. For example, what mild cramping and sensation of blood flow feels like without instilling fear in her.
  • Address the issue of mishap eventualities, for example, spotting, breakthrough bleeding (unplanned or unexpected bleeding), and overflow. These are the number one fears of young girls, so teach her how to handle unexpected occurrences at school, the need to have at least one pad in her school bag and to ask her teacher or school nurse for help. 

Pre-menarche preparedness cannot be over emphasized as menarche is one of the most significant transitional phases of a female adolescent. We are confident that as a parent or guardian, regardless of your gender, you play a crucial role in helping your girl child as she transforms physically, mentally and socially. 

Call To Action

No girl should experience her first period confused, ashamed, or without access to basic hygiene and menstrual products. Your donation will help us educate families, support rural schools and communities, and advance efforts to reduce period poverty. Join us in helping girls experience this important milestone with confidence, dignity, and self-agency.  Donate Today!


Thank you immensely for donating to this cause.


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Reference


Karapanou, O., & Papadimitriou, A. (2010). Determinants of menarche. Reproductive biology and endocrinology: RB&E, 8, 115. 

Koff, E., & Rierdan, J. (1995). Preparing girls for menstruation: recommendations from adolescent girls. Adolescence, 30(120), 795–811.

Lacroix, E. A, Gondal, H., Shumway, R. K., Langaker, D. M. (2023). Physiology, Menarche. National Library of Medicine. 

Lee H. S. (2021). Why should we be concerned about early menarche? Clinical and experimental pediatrics, 64(1), 26–27. 

World Health Organization. (2024). Global report reveals major gaps in menstrual health and hygiene in schools. World Health Organization.

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