A girl typically needs to weigh at least 100 pounds to start menstruating.
According to available information, the onset of menstruation (a girl's first period) is closely linked to body weight and fat percentage. Puberty, which includes the start of menstruation, usually begins between the ages of 8 and 14, with the first period typically occurring between ages 9 and 16.
| Factor | Description |
|---|---|
| Age Range | Puberty: 8-14 years old; First Period: 9-16 years old |
| Minimum Weight | Approximately 100 pounds |
| Puberty Signs | Development of breasts, hips, pubic hair, and growth in height due to puberty hormones. |
It's important to note:
- Weight is just one factor. Other factors, such as genetics, overall health, and nutrition, also play a role in when a girl starts her period.
- The age range for starting menstruation is quite broad. If a girl hasn't started her period by age 16, it's advisable to consult with a doctor.
- Puberty brings many changes. Hormonal changes during puberty cause girls to develop breasts, hips, and pubic hair, as well as experience growth spurts.
