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Body weight should be within 5% of normal body weight for your menstrual cycle to "behave" normally. Here's a great article on body weight and menstruation:,,4_161470,00.html

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โˆ™ 2005-12-19 02:54:38
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Q: How much body fat do you need to get your menstrual cycle to start again?
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What is the purpose of the menstrual cycle?

Menstrual cycle is about 28 days that prepares the body for pregnancy.

How do you force a menstrual cycle?

You can't force your menstrual cycle, it will start only when it is ready to do so. You can't force your body to ovulate and thus to menstruate until it is ready.

Can change in weather affect menstrual cycle?

No, a change in the weather cannot affect the menstrual cycle. The menstrual cycle is controlled by hormones in your body, not by the weather.

What is directly responsible for regulating the menstrual cycle?

The body's natural hormones regulate the menstrual cycle.

What happens a week after menstrual cycle?

Menstrual cycle refers to the entire reproductive cycle, starting during menstruation - there is no 'after the menstrual cycle' but I think you might mean after menstruation. After menstruation the cycle starts again, typically a woman will be fertile around a week after menstruation so her body will produce fertile cervical mucus and she will ovulate.

If I started my menstrual cycle on the third of January. Why do I have my menstrual cycle again on the thirtieth of January?

it is normal. it happens to most people. this is because the body hasn't found it's "pattern" yet, and is just getting used to its monthly cycle.

Can antibiotics induce your menstrual cycle?

No, antibiotics cannot induce your menstrual cycle. Your menstrual cycle is controlled by hormonal changes in your body, antibiotics will not impact on this whole process.

Why does the menstrual cycle happen?

Your body is getting ready to have a baby but if the egg you produce is not fertilized by a sperm it along with it's lining fall out of your body through your vagina therefore creating your period which then happens over again creating the menstrual cycle. Hope this helps!

How is the menstrual cycle controlled by the body?

The body controls the menstrual cycle by adjusting various hormones. These hormones include estrogen, progesterone, oxytocin, and testosterone.

Is it normal to start bleeding at the end of month?

Yes, if that's when you're due to start bleeding. Your menstrual cycle is not controlled by the calendar, your uterus doesn't have a little diary to tell it when to bleed. When you menstruate is determine by hormonal changes in your body, sometimes your menstrual cycle will start at the end of the month.

What day of the menstrual cycle does a woman have her period?

A woman has her period on day one of her menstrual cycle. As menstruation is one of the most obvious signs of changes in her body this is when the menstrual cycle is typically counted from.

Can a yeast infection prolong your menstrual cycle?

No, a yeast infection - whether in the vagina, vulva, or elsewhere on the body - has no impact on the menstrual cycle. The menstrual cycle is controlled by hormones produced by your reproductive organs.

What body system causes the onset of the menstrual cycle?

It is important to know the roles of each system in the body. The reproductive and the endocrine system is the cause of the onset of the menstrual cycle.

What is the meaning of a menstrual cycle?

The menstrual cycle is the reproductive cycle of human beings, experienced by females. Every cycle the body prepares for chance of pregnancy by releasing an egg and plumping-up the uterus lining, if pregnancy doesn't occur then the uterus lining sheds ready to start a new next cycle.

Can you start you normal menstrual in the middle of a provera prescription?

Yes, you can start a normal menstrual period in the middle of a Provera prescription. Depending on your particular body and cycle, you can start your period at any point in the prescription. As your body adjusts to the medication, the flow will become lighter and often stops completely.

How do you know when you are about to start your period in a month?

You know when your period is due by learning your menstrual cycles - you can also use fertility awareness method to track your cycle exactly on a day-to-day basis. Your body will also change throughout your menstrual cycle, with symptoms unique to you - listen to your body.

Is the menstrual cycle always the same length?

No, the menstrual cycle is not always the same length.There are normally a few days variation from the average menstrual cycle, up to a weeks variation. There are also times when the menstrual cycle can be irregular or will change, such as during puberty while the body is developing and it takes time for the body to get into a regular cycle. There will also be times when menstruation can be delayed, which will impact on the cycle.

Can four B12 injection make your menstrual cycle late?

Four B12 shots usually will not cause your menstrual cycle to be late. Your cycle can be late if your body is low in vitamin B12. You should talk with your doctor and ask him why your menstrual cycle would be late

What is the difference between the menstrual cycle and the period?

A menstrual period is when there is a loss several tablespoons of blood and mucus from the vagina; when a menstrual cycle is the series of changes a woman's body goes through for pregnancy.

What body system controls the menstrual cycle?

Endocrine System

What does the menstrual cycle prepare the body for?

Reproduction (having a baby)

Early menstrual cycle mean pregnancy?

If you were pregnant then you'd no longer have a menstrual cycle, if you don't understand that then you should in no way be having sex or sexually active to risk pregnancy. The menstrual cycle is your body preparing for possible pregnancy, when pregnant the cycle is shut down.

What make your menstrual cycle irregular?

The most common causes of irregular cycles are puberty and menopause - when menstrual cycles start it takes time for the body to get into a pattern, and as the reproductive system slows down the cycle starts to become irregular again. Irregular cycles can be a result of hormonal imbalance which may be temporary and mild or may be a symptom of a bigger health problem.

When your body stops menstrual cycle?

The menstrual cycle continues up until pregnancy when the menstrual cycle is stopped so that you no longer ovulate while pregnant and the uterine lining isn't shed. The menstrual cycles also come to an end at the end of your reproductive years going into menopause.

What is the period in the menstrual cycle in which the unfertilized egg and the lining of the uterus leave the body in the menstrual flow?

You've sort of answered this question twice in the question itself! "The PERIOD in the MENSTRUAL cycle which the MENSTRUAL" The menstrual phase aka menstruation or period.