document: Fast-food + coffee = soaring blood sugar GUELPH , Ontario , April 1 -LRB- UPI -RRB- - Eating a fatty fast-food meal can result in blood-sugar levels spiking , and chasing it with caffeinated coffee doubles the trouble , Canadian researchers say . Marie-Soleil Beaudoin , a doctoral student at the University of Guelph in Ontario , with Professors Lindsay Robinson and Terry Graham , discovered not only that a healthy person 's blood-sugar level spikes after eating a high-fat meal , and it doubles if caffeinated coffee is added - jumping to levels similar to those of people at risk for diabetes . In the study , healthy men drank about 1 gram of a fat-laden beverage - a fat cocktail that contains only lipids - for every kilogram -LRB- 2.2 pounds -RRB- of body weight . Six hours later , they were given a sugar drink . When people eat sugar , the body produces insulin , which takes the sugar out of the blood and distributes it to our muscles , Beaudoin explains . The study , published in the Journal of Nutrition , found that the fatty meal affected the body 's ability to clear the sugar out of the blood - blood-sugar levels were 32 percent higher than they were when the men had not ingested the fat cocktail . However , after they received two cups of caffeinated coffee 5 hours after ingesting the fat beverage and later a sugar drink - blood-sugar levels increased by 65 percent .
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