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Lost Weight and Period

Published: August 16, 2019 · Last reviewed on this site: 2026-10-30

This answer may be out of date. It was published over 3 years ago. Health guidance changes — check with a doctor or trusted adult.

The question

Dear TeenHealthFX,

I am a 15 year old girl, I got my period first when I was 9 years old, and there weren't any problems with ever since, but this summer I lost 17 kilograms (which is intentonal, and I just got into the health range for my age and height), and my period skipped two months. Should I be concerned, or will it get back to normal? Thank you for the answer in advance.

Signed: TeenHealthFX


The answer

Amenorrhea is the absence or delay of a menstrual period. This can be scary for someone who was already on a regular schedule. There are a variety of reasons for missed or late periods other than pregnancy. You mentioned that recently, you intentionally lost 17 kilograms to be in the weight range for your age and height. You don’t mention how you lost the weight and over how may weeks. Excessive or sudden weight loss can cause you to miss one or more periods because hormonal functions are disturbed.  TeenHealth strongly recommends that you consultant your doctor if you are still experiencing amenorrhea. Eating a healthy and well-balanced diet can help get you menstrual cycle back

If you don't have a doctor and live in northern New Jersey, you can call the [Adolescent/Young Adult Center for Health at 973-971-5199 for an appointment with an adolescent medicine specialist.