Según la Organización Mundial de la Salud (OMS), la enfermedad pulmonar obstructiva crónica (EPOC) es la tercera causa de muerte en el mundo.
Living in a big city has many benefits. However, city dwellers live in an unfavorable environment due to high population density, exhaust fumes, and waste from industrial enterprises. This increases the risk of developing health problems. What are the risk factors, and how can they be reduced?