Chromium and insulin resistance.

نویسنده

  • Richard A Anderson
چکیده

Insulin resistance leads to the inability of insulin to control the utilization and storage of glucose. It is associated initially with elevated levels of circulating insulin followed by glucose intolerance which may progress to type 2 diabetes, hyperlipidaemia, hypertension, obesity and cardiovascular diseases. While the causes of these diseases are multifactorial, one nutrient that is associated with all of these abnormalities is Cr. In the presence of Cr, in a biologically active form, much lower levels of insulin are required. Modern diets, which are often high in refined carbohydrates, are not only low in Cr, but lead to enhanced Cr losses. In response to the consumption of refined carbohydrates, there is a rapid rise in blood sugar leading to elevations in insulin that cause a mobilization of Cr. Once mobilized, Cr is not reabsorbed but lost via the urine leading to decreased Cr stores. Several studies involving both human subjects and experimental animals have reported improvements in insulin sensitivity, blood glucose, insulin, lipids, haemoglobin A1c, lean body mass and related variables in response to improved Cr nutrition. However, not all studies have reported beneficial effects associated with improved Cr nutrition. Well-controlled human studies are needed to document an unequivocal effect of Cr on insulin sensitivity in human subjects. Studies need to involve a significant number of subjects with insulin resistance, glucose intolerance or early stages of diabetes, who have not been taking supplements containing Cr for at least 4 months, and involve at least 400 to 600 microg supplemental Cr daily or more. Studies should be at least 4 months to document sustained effects of supplemental Cr on insulin resistance and related variables. Cr is a nutrient and not a therapeutic agent and therefore will only be of benefit to those whose problems are due to suboptimal intake of Cr.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Effect of Chromium Picolinate Supplementation Combined With Resistance Training on Liver Enzymes Levels and Insulin Resistance in Patients With Type 2 Diabetes

Objective The aim of this study was to investigate the effect of supplementation with chromium picolinate combined with resistance training on the serum level of liver enzymes and insulin resistance index (HOMA-IR) in male patients with Type 2 Diabetes (T2D). Methods In this study, participants were 30 male patients with T2D (Mean±SD weight: 75.1±6.3 kg and BMI= 26.1±2.3 kg/m2). They were divi...

متن کامل

P-158: Metformin versus Chromium Picolinate in Clomiphene Citrate-Resistant Patients with Polycystic Ovary

Background: To compare the chromium picolinate with metformin in Clomiphene citrate resistant PCOS patients. Materials and Methods: This was a randomized clinical trial being performed at university affiliated clinics including 92 women with Clomiphene citrate-resistant PCOS who were randomly assigned to receive chromium picolinate (200 μg daily) or metformin (1500 mg daily) for 3 months. Anthr...

متن کامل

Chromium picolinate may favorably influence the vascular risk associated with smoking by combating cortisol-induced insulin resistance.

Smoking promotes insulin resistance and other features - excepting hypertension - of the insulin resistance syndrome; these effects appear to reflect chronic nicotine exposure. The adverse impact of smoking on insulin function may be a prominent mediator of the excess vascular risk associated with smoking. Although the mechanistic basis of nicotine-induced insulin resistance remains to be clari...

متن کامل

Chromium Therapy for Insulin Resistance Associated with HIV-Disease.

OBJECTIVE With the advent of highly active anti-retroviral therapy, HIV disease has become a chronic condition, but with a number of metabolic complications including insulin resistance and diabetes mellitus, dyslipidemia and hypertension and an increased incidence of atherosclerosis. The aim of the current study was to test the safety and efficacy of chromium picolinate for HIV- associated ins...

متن کامل

Increased insulin resistance is associated with increased urinary excretion of chromium in non-diabetic, normotensive Saudi adults

The role of trivalent chromium in improving glucose tolerance is well documented. Increased urinary chromium has been reported in type 2 diabetes mellitus, but it was not clear whether this had preceded diabetes mellitus, or was caused by it. Aim was to investigate the relationship between urinary chromium and the degree of insulin resistance in non-diabetic normotensive Saudi adults. 357 healt...

متن کامل

Chlorogenic acid/chromium supplement rescues diet-induced insulin resistance and obesity in mice

Abdominal obesity is a major risk factor for insulin resistance, type 2 diabetes and cardiovascular diseases. Dietary fat induces insulin resistance in humans and rodents. The current study investigates whether a Chlorogenic acid/Chromium III supplement rescues obesity and insulin resistance caused by high-fat feeding of male C57BL/6 J mice for 7 weeks. Administering an oral daily dose of this ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:
  • Nutrition research reviews

دوره 16 2  شماره 

صفحات  -

تاریخ انتشار 2003