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Insulin Resistance (cont.)

Insulin Resistance Symptoms

Aside from the well known association of insulin resistance with the metabolic syndrome, abdominal obesity, elevated cholesterol levels, and high blood pressure; there are several other medical conditions that are associated with insulin resistance specifically. While the associations are clear, whether insulin resistance is the cause of these conditions is not yet known.

Type 2 Diabetes

While insulin resistance is usually seen long before diabetes develops, in cases in which medical attention has lapsed, insulin resistance can present as type 2 diabetes.

Fatty liver

The accumulation of fat in the liver is a manifestation of the disordered control of lipids that occurs with insulin resistance. The extent of liver damage can range from mild to severe. Newer evidence suggests that fatty liver may even lead to cirrhosis of the liver, and possibly liver cancer.


Insulin resistance is one of the factors associated with arteriosclerosis. Arteriosclerosis, also known as atherosclerosis, is a process of progressive thickening and hardening of the walls of medium-sized and large arteries. Arteriosclerosis is responsible for:

Skin Lesions

Skin lesions include an increased number of skin tags and a condition called acanthosis nigricans - a darkening and thickening of the skin, especially in fold areas such as the neckline and axilla. This condition is directly related to the insulin resistance, though the exact causal mechanism is not known.

Reproductive abnormalities in women

Reproductive abnormalities include difficulty with ovulation and conception (infertility), irregular menses, or a cessation of menses. A condition that is significantly associated with insulin resistance is polycystic ovary syndrome (PCOS). PCOS is a problem that affects young women. It is associated with irregular periods or no periods at all, obesity, and increased growth of body hair. In contrast to women, there are no known reproductive abnormalities in men associated with insulin resistance.


High levels of male hormones in women, which are produced by the ovaries, can been seen in insulin resistance and may play a role in PCOS as described above. The high levels of insulin seen in insulin resistance causes the abnormal ovarian hormone production of testosterone and other hormones.

Growth abnormalities

There may be growth effects in insulin resistance due to the high levels of circulating insulin that may be present. While insulin's effects on glucose metabolism may be impaired, its effects on other mechanisms may be intact (or at least less impaired). Insulin can exert effects on growth, through a mediator known as insulin- like growth factor -1. Individuals may have actual linear growth in height and a noticeable coarsening of features. The increased incidence of skin tags mentioned above may be due to this mechanism as well.

Medically Reviewed by a Doctor on 7/31/2014

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