Sir: We all habitually reuse plastic bottles of beverages and cold drinks for water. Almost all these plastic bottles are made up of plastic type-1, which is quite injurious to health because these plastic bottles release a chemical compound, which interrupts hormone production badly. Furthermore, the shapes of these plastic bottles make it impossible for them to be washed out properly. People must use only those bottles that are made of plastic of types 2, 4 and 5. These types are safe for reuse. Through your esteemed paper, I would like to draw the government’s attention to taking serious and immediate action in order to improve health standards in Pakistan. IMRAN SHAH Karachi