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Old 06-19-2002, 02:09 PM   #1  
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Default Causes of PCOS

Causes of PCOS

PCOS is the result of a hormonal imbalance, caused by a disorder in a woman’s endocrine system. This system is made up of all the body’s glands -- pituitary, pineal, thyroid, parathyroid, thymus, adrenal, and pancreas. Hormones secreted by these glands control such things as growth, metabolism, and reproduction. In women with PCOS, this system
is not working properly. Scientists believe there are several potential causes of this hormonal imbalance.

Insulin Resistance

For many years, PCOS was considered a direct result of high levels of male hormones in the body, although it was not understood exactly what caused these high levels. Researchers are now just beginning to understand the association between PCOS and the body’s overproduction of insulin. Many women with PCOS have hyperinsulinemia, a
higher than normal amount of insulin in their bodies. Hyperinsulinemia results from insulin

Insulin resistance results from the body not metabolizing sugar well. Let’s take a closer
look at the process, starting with the intake of food. As food enters your body, it is broken
down into small components, including glucose, an important sugar that comes from carbohydrates. Glucose is a major source of quick energy for the body. When you eat foods high in carbohydrates, your body detects a rise in glucose and signals the pancreas to produce more insulin.

Together, glucose and insulin enter the bloodstream. The insulin fits into special “insulin receptors” in the cells. This allows the excess glucose to enter the cells and be used right away as energy or stored for future use. In the muscles and liver, glucose can be stored
short-term as glycogen. In other tissues it can also be converted into fat for longer storage.

To use an analogy, think of insulin as the key that unlocks the cell door so that excess glucose can enter and be converted to glycogen and stored for later use. When one has insulin resistance, it is as if the key no longer fits the lock. Consequently, the insulin is not able to fit into the insulin receptors, and excess glucose is not allowed to enter the cells. This causes a rise in both glucose and insulin levels in the blood.

In women with PCOS, these increased levels of glucose and insulin create an imbalance with other hormones. Subsequently, the body produces more male hormones and inhibits the ovaries from ovulating. This, in turn, causes the many PCOS-related symptoms. If left untreated, insulin resistance can lead to type II diabetes. Although insulin resistance is not found in every woman with PCOS, it is seen in many with PCOS, most prominently in those who are overweight.


Researchers are finding that genetics seem to play a strong role in developing PCOS. However, this research is often difficult since most women, especially those from previous generations, were never “officially” diagnosed with PCOS. For example, there may be some women in your family who had difficulty getting pregnant but were eventually able to do so. Consequently, they may not think they had a problem with fertility. In addition, many of their other symptoms -- weight gain, hair growth, and acne, for example -- were
either not serious or important enough to mention to their physicians.

Many leading researchers believe that PCOS is inherited. If you have a family history of
adult-onset diabetes, infertility (or difficulty conceiving), obesity, or hirsutism (among
women), then PCOS may run in your family. Similarly, inherited obesity can also increase
the risk of developing the syndrome in those prone to developing it. Fatty tissues can produce estrogen, which can confuse the pituitary gland into secreting abnormal amounts of hormones, contributing to the overall endocrine problem.

Some scientists speculate that women with PCOS are born with either a faulty gene or set of genes that triggers abnormally high levels of male hormones. For example, if your sister has PCOS, there is a 50 percent chance that you will also have PCOS.

Researchers believe that the genetics of PCOS
can also be passed on to males, and they may experience some of the common symptoms. Male relatives of women with PCOS tend to be insulin resistant.
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Old 10-17-2002, 12:02 PM   #2  
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Thank you so much for clarifying things for me. You touched upon points that I am always trying to explain to others. I copied the words you wrote and saved them so I can review them again.

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Old 07-17-2003, 04:55 PM   #3  
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Default PCOS

My dr. said I had PCOS over a year ago. He asked if I wanted to get pregnant and I said no (single). Then he stuck me on birth control for a year. I finished taking them in December and haven't went back for more. Should I be taking them.. will it increase my chances of getting pregnant in the future? I feel at a loss..
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