Over the past 67 years medical practice has changed for the better. Today we have a better understanding on how our bodies work and things we can do to help them. Since 1950 our birth rate has gone down because of the better understanding of pregnancy.What i mean by this is now that we that know how babies are made and ways to prevent having kids we have a better understanding than we did then. Along with the birth rate there is decrease in our infant mortality rate as well. Humans now also have a longer lifespan. In 1950 the average lifespan of humans was about 68.2 years old and today it is about 78.7 years old. Fewer people are dying from thing like polio and tetanus. Also, more people are becoming doctors and physicians. Now fewer people
