Sofa is an integral part of your living room. You spend hours on it either just relaxing or attending your guests or watching TV. So be careful while you buy a sofa. You should do enough research and devote enough time to buy a sofa. Some of the sofas are made of materials that can be harmful for your health. In fact many manufacturers use certain chemicals that are not good for you. Leather sofas are toxic at times. They can cause burn sensation. While some sofas can lead to skin diseases including sin cancer some others can cause back pain. These are the issues that you should keep in mind while shopping for sofas. Make sure that the material used is good for your health.