5 reasons for the late period of teenage girls

Reasons for the late period of teenage girls – Many teenage girls may go through delayed puberty when breasts don’t develop by age 13 or menstrual periods don’t start by age 16 Puberty changes usually occur when the body begins to manufacture sex hormones. Where these changes begin to appear in adolescent girls when they reach the age of approximately 8-14 years, with late puberty these changes may not occur, or if they do occur, they will not progress normally.

Reasons for the late period of teenage girls

What you must know is that in most cases girls get their first menstrual period when they are 12 or 13 years old, as its occurrence is a sign that the body is in a state of maturation and development. According to a lot of evidence, more than 98% of cases of teenage girls have started menstruating by the age of 15 years. So what are the reasons for the late period of teenage girls?

Family history

The girl’s family history may be a reason for her late period, that is, if the mother or a close relative of the family had their period at a late age, that is, more than 15 years old.

Most girls tend to get their periods 2-3 years after breast development begins and 6-12 months after they notice some mucus-like vaginal discharge in their underwear, all of which can occur later than average in some families.

The weight

Being underweight or gaining weight can alter your menstrual cycle. Your period is the result of a complex interaction that may occur between both your ovaries and your brain. Some changes in hormone levels lead to ovulation, and further hormonal changes lead to your period.

Anything that interferes with this interaction can prevent the body from ovulating, so if ovulation does not occur, your period will be delayed. In the event that the weight of the girl is less than 10% of the healthy weight appropriate for her height, this will prevent the hormones from working properly, which leads to a delay in the menstrual cycle, as well as with regard to being overweight or obese.


Excessive activity may be one of the main causes of delayed menstruation for teenage girls. Intense exercise burns a lot of calories, and can therefore leave very little fat in the body.


The delay in menstruation may depend on some teenage girls because they feel some tension as a result of suffering from a lot of homework, family problems, intense sports training, or any other type of problem that affects their psychological condition.

Polycystic Ovary Syndrome (PCOS)

It is a pathological syndrome that causes the body to produce more male hormones known as androgens, then some cysts form on the ovaries due to this hormonal imbalance, which makes ovulation irregular or stops it completely.

Thyroid activity disorders Hyper or inactivity of the thyroid gland may be a cause of delayed menstruation in some teenage girls. What you should know is that the thyroid gland is responsible for regulating the body’s metabolism, so hormone levels can also be affected for Reasons for the late period of teenage girls.

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Reasons for the late period of teenage girls
Reasons for the late period of teenage girls

Risk factors for delayed menstruation in teenage girls

After talking about the most prominent reasons for the late period of teenage girls It is necessary to talk now about some of the risk factors that may also have a clear effect in delaying the menstrual cycle for some girls, which usually include each of the following – Reasons for the late period of teenage girls:

  1. Use of certain types of medications, such as cancer treatment, high blood pressure, allergy or depression medications.
  2. Suffering from some problems in a specific part of the brain known as the hypothalamus or even the organ close to it called the pituitary gland.
  3. Turner syndrome, or androgen insensitivity syndrome.
  4. Having some problems with the vagina, ovaries, or fallopian tubes, such as extra tissue covering an opening, blockage, or physical problems.
  5. Premature ovarian insufficiency.

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