How do sugary drinks lead to this increased risk? Weight gain may explain the link: In both the Nurses’ Health Study II and the Black Women’s Health Study, women who increased their consumption of sugary drinks gained more weight than women who cut back on sugary drinks. (26, 28) Several studies show that children and adults who drink soda or other sugar-sweetened beverages are more likely to gain weight than those who don’t, (28, 30) and that switching from these to water or unsweetened beverages can reduce weight. (31) Even so, however, weight gain caused by sugary drinks may not completely explain the increased diabetes risk.  There is mounting evidence that sugary drinks contribute to chronic inflammation, high triglycerides, decreased “good” (HDL) cholesterol, and increased insulin resistance, all of which are risk factors for diabetes. (32)
Recently, evidence suggested a link between the intake of soft drinks with obesity and diabetes, resulting from large amounts of high fructose corn syrup used in the manufacturing of soft drinks, which raises blood glucose levels and BMI to the dangerous levels.38 It was also stated by Assy39 that diet soft drinks contain glycated chemicals that markedly augment insulin resistance. Food intake has been strongly linked with obesity, not only related to the volume of food but also in terms of the composition and quality of diet.40 High intake of red meat, sweets and fried foods, contribute to the increased the risk of insulin resistance and T2DM.41 In contrast, an inverse correlation was observed between intake of vegetables and T2DM. Consumption of fruits and vegetables may protect the development of T2DM, as they are rich in nutrients, fiber and antioxidants which are considered as protective barrier against the diseases.42 Recently, in Japanese women, a report revealed that elevated intake of white rice was associated with an increased risk of T2DM.43 This demands an urgent need for changing lifestyle among general population and further increase the awareness of healthy diet patterns in all groups.