Final answer:
Type II diabetes is increasing among those under 20 due to sedentary lifestyles, poor diets, and increasing rates of obesity. This condition is primarily related to insulin resistance and lifestyle factors, rather than autoimmune disorders or other causes. It is largely preventable through healthy living choices.
Step-by-step explanation:
More and more cases of type II diabetes are being reported in persons younger than 20 years old primarily due to a much more sedentary lifestyle and lack of exercise. Type 2 diabetes typically begins as insulin resistance and may be exacerbated by a reduction in insulin secretion. Major risk factors include obesity and the presence of pre-diabetes. Furthermore, factors such as poor diet, inactivity, and being overweight significantly increase the risk of developing type 2 diabetes. It's crucial to note that while type 1 diabetes is an autoimmune disease, type 2 is largely preventable through lifestyle choices such as regular physical activity, maintaining a healthy diet, and achieving a moderate weight loss.