WEDNESDAY, Dec. 2, 2015 (HealthDay News)Caffeine-laden "energy shots" appear to trigger short-term insulin resistance in teenagers, Canadian researchers report. The finding suggests that this effect might lay the foundation for developing type 2 diabetes later in life, the researchers said. Research presented at meetings is considered preliminary until published in a peer-reviewed medical journal. Insulin resistance is the first step in developing type 2 diabetes, Hux explained. The glucose tolerance test measures the body's ability to process sugar and is a standard screening tool for type 2 diabetes, Hux said. All the teens eventually tried both 5-hour Energy products, so their blood sugar and insulin response could be compared head-to-head between the caffeinated and non-caffeinated versions. "For individuals who are susceptible to developing type 2 diabetes down the road, this could hasten the disease along," she said. On the other hand, energy drinks contain a processed form of powdered caffeine that more directly affects a person's metabolism, she explained.