Abstract
Introduction
Diabetes Mellitus (D.M.) refers to a group of common metabolic disorders that share the phenotype of hyperglycemia1. It results from a defect in insulin secretion and/or insulin action, which results in hyperglycaemia with disturbances of carbohydrate, fat and protein metabolism2.
Diabetes is one of the commonest chronic non communicable diseases affecting the society at large both in developing and developed countries. It is generally classified as type 1, type 2 or other specific types3.
Type 1 diabetes is generally considered a T cell mediated autoimmune disease involving destruction of the insulin secreting β cells in the pancreas, resulting in absolute insulin deficiency, whereas type 2 diabetes is characterised by resistance to the action of insulin and an inability to produce sufficient insulin to overcome this ‘insulin resistance’4.
Globally, all types of diabetes are on the increase, type 2 diabetes in particular5. While diabetes has been known for many centuries, the prevalence has reached epidemic level proportion only recently6. The rise of prevalence has been more alarming in developing countries than in developed countries. There has also been a trend towards a shift in the mean age of onset of type 2 diabetes to a much younger age 7.
As per the 9th edition of International Diabetes Federation Atlas, 2019,. The global diabetes prevalence is estimated to be 9.3% (463 million people), rising to 10.2% (578 million) by 2030 and 10.9% (700 million) by 2045... The major proportion of this increase will occur in developing countries of the world like India8. One in two (50.1%) people living with diabetes do not know that they have diabetes.
India leads the world with largest number of diabetic subjects earning the dubious distinction of being termed the “Diabetes Capital of the World.
Type 2 diabetes is accompanied by a high prevalence of associated disorders like the various components of the metabolic syndrome like hypertension, dyslipidemia and obesity; micro vascular complications like retinopathy (Rt), nephropathy (Np), neuropathy (Nu) and macro vascular complications like coronary artery disease, peripheral vascular disease and cerebrovascular disease resulting in significantly high morbidity and mortality[9-14]. The chronic complications of diabetes mellitus translate into a significant economic burden on individuals and community at large14.
References
- Harrison’s principles of Internal Medicine, 20th edition 2018. P- 2850.
- Hovens MMC, Van de loar FA et al. Acetylsalicyclic acid (aspirin) for primary prevention of cardiovascular disease in type 2 diabetes (protocol) Cochrane database os systematic reviews 2005, issue 3. Art no. CD005446.
- Mohan V, Pradeepa R & Anjana R M , Diabetes in India- An Epidemiological review. Current Controversies and Consensus in Diabetes Management, 1st edition 2015. P- 1.
- Davidson’s principles & practice of Medicine, 23rd edition, 2018. P -728.
- International Diabetes Federation – IDF Diabetes Atlas, 6th Brussels, Belgium : International Diabetes Federation, 2013
- Major RM. A history of medicine. Blackwell, oxford, 1954; P- 67
- Progress in Medicine Vol. XXIX 2015. P-164
- International Diabetes Federation. The Diabetes Atlas, 9th 2019.
- MJ Garcia, PM McNamara, T Gordon, WB Kannel. Diabetes, 1974, 23, 105-111
- WB Kannel, DL McGee. Circulation, 1979, 59, 8-13.
- J Stamler, D Wentworth, J Neaton, JA Schoenberger, D Feigal; for the MRFIT Research Group. Circulation, 1984, 70, 11-161.
- SM Haffner; S Lehto; T Ronemaa; K Pyorala; M Laasko. N Engl J Med, 1998, 339, 229–234.
- A Juutilainen; S Lehto; T Ronnemaa; K Pyorala; M Laakso. Diabetes Care, 2008, 31, 714-719.
- O Wirta; A Pasternak; J Mustonen; P Laippala; Y Lahde. Clin Nephrol, 1999, 51, 329-334.
- Harris MI, Klein R, Welborn TA, Knuiman MW. Onset of NIDDM ocurrs at least 4-7 yr before clinical diagnosis. Diabetes Care 1992; 13:815 - 819.
- Ramachandran A. Socioeconomic burden of diabetes in India. Suppl. JAPI 2007; 55:9
- Rema M, Deepa R, Mohan V: Prevalence of retinopathy at diagnosis among type 2 Diabetic patients attending a diabetic centre in south India. Br J Ophthalmol 2000; 84: 1058 -1060.
- Premlata G, Rema M, Mohan V complications of diabetes mellitus at diagnosis in south indian type 2 diabetic patients j. diab. dev. countries (1998), vol. 18:58-63
- Rema M, Premkumar S, Anitha B, Deepa R, Pradeepa R, Mohan V. Prevalence of diabetic retinopathy in urban India: the Chennai Urban Rural Epidemiology Study (CURES) eye study, I. Invest Ophthalmol Vis Sci 2005; 46 : 2328-33.
- A . Sosale, K M P Kumar, S M Sadikot et al., “Chronic complications in newly diagnosed patients with type 2 diabetes mellitus in India”, Indian Journal of Endocrinology and Metabolism, 18, no. 3, pp. 355-360, 2014.
- Owens DR, Volund A, Jones D, Shannon AG, Jones IR, Birtwell AJ, Luzio S, Williams S, Dolben J, Creagh FN: Retinopathy in newly presenting non-insulin-dependent (type 2) Diabetic patients. Diabetes Res 1988; 9: 59–65.
- Tzeng TF, Hsiao PJ, Hsieh MC, Shin SJ: Association of nephropathy and Retinopathy, blood pressure, age in newly diagnosed type 2diabetes mellitus. Kaohsiung J Med Sci 2001; 17: 294–301.
- Kohner EM, Aldington SJ, Stratton IM, Manley SE, Holman RR, Matthews DR, Turner RC: United Kingdom Prospective Diabetes Study, 30: diabetic retinopathy at diagnosis of non-insulin-dependent diabetes mellitus and associated risk factors. Arch Ophthalmol 1998; 116: 297–303.
Corresponding Author
Dr Kaushal Kumar Sinha
Fellow- Non Invasive Cardiology, GIPMER