How to make iced tea with green tea and stevia.

For the reference for stevia increasing insulin sensitivity is:
Shivanna, N., et al. Antioxidant Anti-Diabetic and Renal Protective Properties of Stevia Rebaudiana. Journal of Diabetes Complications. 2013 Mar-Apr;27(2):103-13. doi: 10.1016/j.jdiacomp.2012.10.001. Epub 2012 Nov 7. Worked for rats, anyway.