A common myth is that bad posture or slouching causes scoliosis. Although a bad posture and persistent slouching can have a negative impact on the overall health, these do not lead to scoliosis. Scoliosis is also not caused by carrying a heavy rucksack or school bag on one shoulder or carrying heavy loads on both the shoulders. While slouching, carrying weight on one shoulder and so on do not cause scoliosis, they may have other detrimental health effects including resulting in hyperkyphosis which is another type of forward curvature of the spine. With appropriate physical training and posture correction, these types of curvatures can be reversed and prevented.