Questions: By the year 2045, 700 million people are predicted to be diabetic worldwide, a 51% increase compared with 463 million in 2019. Which factor is responsible for this global rise in type 2 diabetes? - an increase in the prevalence of obesity - genetic changes - an increase in high fructose corn syrup consumption - a decrease in physical activity

The answer is the first one: an increase in the prevalence of obesity.

Explanation for each option:

1. An increase in the prevalence of obesity: This is the correct answer. Obesity is a major risk factor for type 2 diabetes. As obesity rates increase globally, the prevalence of type 2 diabetes also rises. Obesity leads to insulin resistance, which is a key factor in the development of type 2 diabetes.

2. Genetic changes: While genetics play a role in an individual's risk of developing type 2 diabetes, genetic changes in the population do not occur rapidly enough to account for the significant increase in diabetes prevalence over a few decades.

3. An increase in high fructose corn syrup consumption: Although high fructose corn syrup consumption can contribute to obesity and metabolic issues, it is not the primary factor responsible for the global rise in type 2 diabetes. The broader issue of overall dietary habits and calorie consumption is more significant.

4. A decrease in physical activity: A decrease in physical activity is a contributing factor to the rise in type 2 diabetes, as it can lead to weight gain and insulin resistance. However, it is not the sole or primary factor; the increase in obesity is more directly linked to the rise in diabetes cases.

In summary, the global rise in type 2 diabetes is primarily driven by an increase in the prevalence of obesity.