Although a great deal is now known about the polycystic ovary syndrome, the exact cause has yet to be found. Polycystic ovary syndrome is probably an inherited condition. There has been one specific gene implicated and two others also seem to be involved. Premature balding in men is often a manifestation of the same gene that results in PCOS in women. The hormone chemistry of polycystic ovaries is often deranged. This may result in period problems, particularly reduced or absent periods. Polycystic ovaries tend not to release their eggs regularly and, without treatment, there may be problems with fertility.
Insulin is produced by the pancreas, which is a gland found in the abdomen. This gland has two functions, both related to the way the body deals with food. It secretes enzymes (chemical catalysts) into the small bowel allowing food to be broken down into the basic components that can be absorbed. The pancreas also secretes insulin into the blood stream. Insulin is a hormone (hormones) that reduces the blood sugar level, mainly by converting sugar into fat. Diabetes occurs when the pancreas can no longer produced sufficient insulin to prevent the blood sugar level rising too high. It turns out that most women with PCOS are resistant to insulin. Hormones work like a key in a lock. Insulin resistance means that the insulin hormone receptors are defective and a stronger key is required. The result is an increased output of insulin and it is the higher levels of insulin that seems to result in the typical problems of PCOS. Women with PCOS are not diabetic and so there is no difference in their response to a glucose (sugar) load(Figure 7.2). Typically, women with PCOS require greater output of insulin from the pancreas to prevent their sugar rising too high (Figure 7.3).
It is becoming recognised that some patients have symptoms and blood chemistry (hormone levels) typical of polycystic ovary syndrome, although their ovaries do not have a typical PCO picture. The latest definition of PCOS allows for this.0401
I do hope that you find the answers to your women's health questions in the patient information and medical advice provided.
The aim of this web site is to provide a general guide and it is not intended as a substitute for a consultation with an appropriate specialist in respect of individual care and treatment.David Viniker retired from active clinical practice in 2012.
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