Question

1. How have the most important causes of US mortality changed between 1900 and today, and how has that affected lifespan?

   	A.	Heart disease and pneumonia were most important in 1900, treated with vaccinations and antibiotics, now it is heart disease and diabetes, so lifespan is 1.5 times longer.
   	B.	Cancer and newborn deaths were most important in 1900, but now with better hygiene, it is cancer and diabetes which are the biggest killers while the lifespan is 20 years longer
   	C.	In 1900 the biggest killer was infectious disease, but sanitation, vaccinations, and antibiotics lessened the impact. By 2010, cardiac disease and cancer caused the most deaths. The lifespan has almost doubled.
   	D.	In 1900, cardiac disease and infections were the largest killers, but now with antibiotics, it is diabetes and overdosing opioids. The lifespan has consequently lengthened by 30 years.

Answer 1

In 1900 the biggest killer was an infectious disease, but sanitation, vaccinations, and antibiotics lessened the impact. By 2010, cardiac disease and cancer caused the most deaths. The lifespan has almost doubled.

In 1900 there were three major killer infectious diseases, pneumonia, tuberculosis, and diarrhea. Theses 3 disease causes almost 1/3 of the total death, between these deaths more than 40% percent was children below 5 years, But now due to epidemiological transition, lifestyle changes and technology advancement and innovation in health care the transition of infectious disease shifted to non-infectios disease(Non-communicable disease) like heart disease and cancer.

Answer - C