Coffee causes cancer? No panic. Actually, one would need to drink 10 kilograms of coffee a day for cancer to be caused. This figure is according to the China National Center for Food Safety Risk Assessment, which calculated that the carcinogenic dose of acrylamide is 2.6-16 micrograms per kilogram of body weight per day. The average dose of acrylamide in brewed coffee is 13 μg/kg. A conservative estimate suggests that an adult weighing 50 kg would have to consume 130 micrograms of acrylamide a day (2.6 micrograms x 50) to reach the carcinogenic dose, which is 10 kg of coffee.