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    Non-obese and lean Indians also prone to type 2 diabetes: study

    Written by Dr. Kamal Kant Kohli Kohli Published On 2019-01-29T19:28:45+05:30  |  Updated On 29 Jan 2019 7:28 PM IST
    Non-obese and lean Indians also prone to type 2 diabetes: study

    Contrary to popular belief, not only obese and overweight but also non-obese and lean persons may be prone to type 2 diabetes.


    A recent study has found that while most diabetics in the West are also overweight and obese, in India nearly 20 to 30 percent suffering from diabetes are non-obese and even some are lean.


    The incidence of type 2 diabetes has been showing an upward trend in India and elsewhere in the world. This basically arises due to insulin resistance. Increasing obesity and sedentary lifestyle are considered to be main pivotal factors for insulin resistance and consequent diabetes. However, the new study has busted the myth that increasing obesity alone is the main causative factor.


    Insulin resistance occurs when the cells in muscles, body fat and liver start resisting the signal that the insulin hormone is trying to send out to get glucose (also known as body sugar which is the main source of body’s fuel) out of the bloodstream and put it into the cells. Insulin resistance leads to diabetes, which in medical parlance is known as type 2 diabetes mellitus or T2DM.


    Researchers measured insulin levels of 87 diabetics (67 men and 20 women) and also C-peptide levels. Actually, beta cells in the pancreas that make insulin also release the C-peptide - a polypeptide composing of 31 amino acids. Although C-peptide does not actually affect blood sugar of a person, the doctor can measure its level to figure out how much insulin the person’s body is making.



    Dr Anoop Misra with researchers.



    " Indians have normal weight-high body fat and low muscle mass. They are not overtly obese, but have not only high body fat but fat which is located in the crucial organs of metabolism, liver and pancreas. " : Dr. Anoop Misra, chairman Fortis C-DOC

    What made researchers measure the C-peptide levels along with insulin levels in the diabetics under study? This is because C-peptide gets secreted at a more constant rate across time durations as compared to the insulin secretion. Also, C-peptide levels are more stable compared to insulin level (its half life is nearly six times that of insulin) which facilitates testing of beta cells’ response, the study has pointed out. The results revealed that the persons included in the study had, by and large, features of adiposity characterised by high body fat, abdominal fat and fatty liver condition, which may not be visible from outside.


    The study has concluded that non-obese (body mass index or BMI below 25 kg/metre square) and even lean (BMI below 19 kg/metre square) Indians have high body fat, excess fat in liver and skeletal muscles and lesser skeletal muscle mass. In particular, they have ectopic fat in liver (non-alcoholic fatty liver disease) and pancreas (non-alcoholic pancreas disease), which may contribute to insulin resistance leading to diabetes even in young age.


    Along with high body fat and visceral fat, researchers also found elevated levels of insulin and C-peptide in the 87 diabetic patients studied by them. Such patients would benefit better from pharmacotherapy using insulin sensitizers or weight loss therapy, the study noted.


    Summarising the outcome of the study, Dr. Anoop Misra, chairman Fortis C-DOC who led the study, told India Science Wire: “Indians have normal weight-high body fat and low muscle mass. They are not overtly obese, but have not only high body fat but fat which is located in the crucial organs of metabolism, liver and pancreas. Once this occurs, action of the insulin hormone becomes jeopardised, and blood sugar starts increasing,”


    “Indian physicians should urge patients to lose weight even when they are in normal body mass index (BMI) category so as to maintain body habitus at leaner side. This could prevent diabetes in those who do not have it yet, and blood sugar levels are better managed in patients with diabetes,” he added.


    The results of this study were published in journal Diabetes & Metabolic Syndrome: Research & Reviews. The research team included Shajith Anoop, Anoop Misra, Surya Prakash Bhatt, Seema Gulati and Harsh Mahajan.


    Non-obese and lean Indians also prone to type 2 diabetes: study


    By Dr. P. K. Mukherjee


    India Science Wire

    blood sugarchance ofdevelopingdiabetesDiabetes MellitusdiabeticevenHbA1chigh fatHigh liver fatIndiansjournal Diabetes & Metabolic Syndrome: Research & Reviewsleanlikely to havelow BMIlow muscle massmore proneNAFLDNon-obeseNormal weightprone toT2 diabetesthinType-2 diabetes

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    Dr. Kamal Kant Kohli Kohli
    Dr. Kamal Kant Kohli Kohli
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