This one paragraph is the sum total given for the diabetes angle:
"Rice’s nutritional quality is another growing concern. The grain is high in glucose, which contributes to diabetes and obesity, and low in iron and zinc, two important micronutrients. In South Asia the prevalence of diabetes and malnutrition can be traced to over-reliance on rice."
See https://support.upwork.com/hc/en-us/articles/360043210654-Mo...