Patients who eat laxatives can cause intestinal pigmentation, there will be colorectal melanosis, long time easy to appear colon malignant, and some patients will appear obvious abdominal pain, diarrhea, mucus pus blood stool, induced non-specific intestinal inflammation, similar to ulcerative colitis changes, and other patients will therefore appear gastric disease, recurrent episodes, prolonged, painful and emaciation. Laxatives also have a lot of harm we can not imagine, so laxatives are not recommended to take, if the constipation is very serious or want to lose weight, you can also through diet, exercise to regulate. Dietary attention to eat more crude fiber food, more fresh vegetables and fruits, more exercise, it is important to insist. You can also try probiotic therapy.