A new study adds to a growing body of research showing that e-cigs do, in fact, help people cut back on their tobacco consumption. Over an eight-month period, Belgian researchers tracked 48 smokers who were unwilling to quit smoking. The smokers were divided in to three groups: two who were given e-cigarettes over the entirety of the period, and a third that switched from tobacco to e-cigarettes two months into the study period.

“At the end of the 8-month study, 21% of all participants had stopped smoking tobacco entirely, whereas an additional 23% reported cutting the number of tobacco cigarettes they smoked per day by half,” the authors conclude. Across all three groups, total tobacco consumption fell by 60 percent.