How Long After Puberty Does Period Start (And Why)?

Exact Answer: One To Two Years

A period which is scientifically termed menstruation is referred to as regular discharge of mucosal tissue and blood from the vagina of a woman for two to eight days. Menstruation can start anywhere between the ages of thirteen and eighteen, and it occurs up to forty-five to fifty.

Stoppage of menstruation permanently is medically known as menopause. The blood removed through the vagina consists of the uterine lining and the female eggs produced by the body to get fertilized by the sperm, but it didn’t happen. Periods start after Puberty, and the actual onset differs from one female to another.

How Long After Puberty Does Period Start

How Long After Puberty Does Period Start?

Various types of hormonal changes are responsible for the occurrence of periods. The menstrual cycle is mainly characterized by the simultaneous rise and fall of hormones in the body. Progesterone is a hormone that is responsible for causing menstruation. A low level of this hormone triggers menstruation, and menstruation guarantees that pregnancy has not occurred in this phase. The amount of blood leakage is high on the first two days of the period. However, it gradually decreases as time passes by.

Ovulation is defined as the phenomenon of the release of eggs from the ovaries of a woman. This event occurs when the ovarian follicles are ruptured, resulting in the release of a woman’s secondary oocyte ovarian cells. After the completion of ovulation, a luteal phase is started in which the egg is available to get fertilized with a male’s sperm. A woman is most fertile when ovulation as the eggs are completely developed and are ready to fuse with the sperm. Periods last for about a week and two weeks after that ovulation occurs. A woman may feel various changes at the time of ovulation as the hormone level increases.

Events After PubertyTime After Puberty
Growth of pubic hairThree to four months
Onset of periodsOne to two years

The body starts changing after a person reaches puberty. Growth of pubic hair takes place after three to four months of puberty. In contrast, periods start after one to two years after a girl attains puberty.

Also Read:  How Long After Surgery Can You Have Sex (And Why)?

Why Does Period Start So Long After Puberty?

A consistent pattern of emotional changes is observed in females during ovulation and the menstrual cycle. Some of the most common symptoms include craving to eat sweet things such as sweets. Most medical experts advise not to consume alcohol or caffeine during the menstruation period as it will increase the body pain many folds. Various medications are available to control the pain and provide relief in such conditions. More than ninety percent of women complain of several symptoms during the premenstrual phase.

The entire cycle of menstruation is of around twenty-eight days. These twenty-eight days start after the completion of one menstrual period. After the period is completed in this cycle, the body again starts to produce an egg and places it in the uterine lining for getting fertilized. If the egg is fertilized, then the woman becomes pregnant, and the menstrual cycle is stopped for the duration of pregnancy.


It takes that long after Puberty for periods to start because the body starts preparing itself by changing the hormone levels. Estrogen levels of the body increase at the time of periods. Two critical hormones, known as follicle-stimulating hormone and luteinizing hormone, are responsible for the rupture of the follicles of the ovary, which results in the release of the eggs from the ovary. However, every egg has a lifetime, and it is of no use after that time. A woman’s body has two ovaries, and both function alternatively in producing eggs in the body.

Also Read:  How Long Does It Take To Pee After Drinking Water (And Why)?


Finally, it can be concluded that menstruation is the release of new eggs from the ovaries after the previous ones have been removed from the body during the menstrual cycle. Periods refer to two to eight days in which the body loses blood from the vagina. Sanitary pads are used to control blood leakage in such cases.

On average, periods start after one to two years of attaining puberty. In case any infection or discomfort occurs, then it is crucial to seek medical guidance immediately. When a girl reaches puberty, she must be guided by an older woman to tackle menstruation issues as it will be her first time.


Avatar of Nidhi


Hi! I'm Nidhi.

Here at the EHL, it's all about delicious, easy recipes for casual entertaining. So come and join me at the beach, relax and enjoy the food.


  1. The knowledge gained from this study will help me understand the journey of my daughters through puberty.

    1. It’s nice to have such information at our disposal to help support the development of our daughters from puberty through menstruation.

  2. Fascinating, menstruation is not commonly discussed with such depth and clarity. It is refreshing to learn more.

Leave a Reply

Your email address will not be published. Required fields are marked *