There are a lot of negative side effects of laxative abuse including dehydration (which can lead to other problems such as kidney failure and death), electrolyte imbalances, and internal organ damage such as a stretched colon, colon infection, IBS, and in rare cases, liver damage.
Also, it is a myth that laxatives help you lose weight. They help you “lose” weight by getting rid of water weight, which is why you get dehydrated. It is not an effective method for weight loss by any means, and the side effects of abusing laxatives can be life threatening.
SOURCE: Eating Disorder Support and Awareness – Read entire story here.