Food groups and risk of all-cause mortality: a systematic review and meta-analysis of prospective studies

A clear indication of nonlinearity was seen for the relations between vegetables, fruits, nuts, and dairy and all-cause mortality. Optimal consumption of risk-decreasing foods results in a 56% reduction of all-cause mortality, whereas consumption of risk-increasing foods is associated with a 2-fold increased risk of all-cause mortality.

Source: Food groups and risk of all-cause mortality: a systematic review and meta-analysis of prospective studies

Happy 4th!  Grill more veggies.