What percentage of deaths are related to cancer?

20-30% Cancer is the second leading cause of death in the us and about a quarter of all deaths are due to cancer. Heart disease is the number one cause of death.
About 20% I believe that as usual, dr. Singh is correct. Government figures will give numbers as low as 13%, but in my experience doing autopsies on the elderly, cancer is often missed and death attributed wrongly to cardiovascular disease.