What BMI is too low for periods?

The greater your BMI (typically in the obesity range over 35), the more likely you are to miss your period. It is even possible to stop bleeding altogether, a condition known as secondary amenorrhea….Weight Gain.

Category	BMI
Underweight	Below 18.5
Normal weight	18.5-24.9
Overweight	25-29.9
Obese	30 and up

Is it bad to have a BMI of 14?

A person with a BMI of 10 or 11 is definitely skinny, but probably OK if they have a small frame. A BMI of 12-13 is good for a person with an average build, and a large-framed person would still be healthy with a BMI of 14. Past that, unless you’re a super muscular athlete, you probably need to lose a few pounds.

What BMI did you get your period back?

The researchers found that the return of the menstrual cycle was associated with percentage of weight gained and had nothing to do with how underweight a girl was at the start of the study. Girls who had their menstrual cycles return had an average BMI of 16.5.

Will my period stop if I’m underweight?

Excessive or sudden weight loss can cause your periods to stop. Severely restricting the amount of calories you eat stops the production of hormones needed for ovulation. Your GP may refer you to a dietitian if you’re underweight, which is when you have a body mass index (BMI) of less than 18.5.

What is considered underweight for a woman?

Women with a BMI of less than 18.5 are considered underweight. The average woman’s height is 5 feet, 4 inches. If you weigh 107 pounds or less at this height, you are considered underweight with a BMI of 18.4. BMI is just one way to measure healthy weight.

Will period come back after weight loss?

It may take up to six months for menses to resume after weight has been restored. Persistence of amenorrhea beyond this point may indicate the individual is not truly fully weight restored.

Does weight gain affect periods?

The body needs some fat to produce the hormones of the menstrual cycle, so gaining weight may help regulate their periods. Similarly, having obesity or being overweight may cause menstrual irregularities. Losing weight may make a person’s periods more regular.

Can a low BMI cause irregular periods?

Women that have a low BMI produce a reduced amount of estrogen which can lead to an abnormal menstrual cycle. Amenorrhea, or the lack of a menstrual cycle, is a result of a low BMI.

What happens if your BMI is too low for menstruation?

Underweight and Menstruation. A low BMI often stops menstruation. A low BMI may result from excess physical training, lack of calorie intake or genetics. If you get your BMI back to normal levels, you may start experiencing normal menstruation.

What is the normal range of body mass index?

A normal BMI falls between 18.5 and 24.9. If you have a BMI under 18.5, you are underweight. You are classified as overweight if you have a BMI between 25 and 29.9, and you are considered obese if your BMI is greater than 30.

Is it normal for periods to be different lengths every month?

Your menstrual cycle might be regular — about the same length every month — or somewhat irregular, and your period might be light or heavy, painful or pain-free, long or short, and still be considered normal.

Does BMI affect early menarche in young girls?

A young girl with a BMI over 30 has an increased risk of experiencing early menarche, meaning she has her first period before the age of 12.