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.
Shanty town residents face many problems on a daily basis. Khayelitsha in South Africa is a shanty town located near the city of Cape Town. Shanty towns are also known as townships in South Africa. Khayelitsha has a population of over 1.8 million people and is one of the largest townships in South Africa.