Shortness of breath is by far the most common of emphysema symptoms. Most people with emphysema first notice something's wrong when they become winded during a previously routine activity. This might be climbing stairs or mowing the lawn. The shortness of breath in emphysema results from structural changes in the lungs.
The African city with the largest population is Lagos, Nigeria. In 2014, the city was estimated to have a population of 21 million people.
Largest City in Africa: Lagos, Nigeria (15,118,780 (2014)) While Africa is first alphabetically, it is second in both population and size among the Earthâs seven continents. Over 1 billion people can call Africa home. The people of Africa are spread across 54 different countries in Africa.