What are cylinders in a car? They are the hollowed out shapes/areas in the motor block, which the pistons move up and down through. The petrol is let into the cylinder, when piston pushes up, the petrol eâ¦xplodes and pushes the piston down. The bigger the cylinder the bigger to push, the more powerful the motor.
1 One in 200 American women suffers from anorexia. 2  Two to three in 100 American women suffers from bulimia. 3  Nearly half of all Americans personally know someone with an eating disorder (Note: One in five Americans suffers from mental illnesses.)  An estimated 10 â 15% of people with anorexia or bulimia are males.
Article. Anorexia nervosa is a disease which mainly affects adolescents, and is more common in girls, with a ratio of 10:1.1 Eating disorders (anorexia and bulimia) affect about 5 million persons each year in the United States and their prevalence is increasing.,2 Anorexia nervosa is a potentially fatal disease with a mortality rate of 0.56% per year, which is more than 12 times as high as that of young women in the general population.