All-cause mortality is a proxy variable for life expectancy. Low all-cause mortality is equivalent to a long life expectancy. All-cause mortality is an important quantitative indicator of quality of life and is strongly influenced by diet, lifestyle and risk factors. Some relationships seem obvious, like the relationship between a healthy diet and low all-cause mortality, while others are based on relatively recent scientific discoveries such as telomeres shorten with age.
Read about the various associations with all-cause mortality in the following articles: