L-arginine supplement following a heart attack may be harmful

Use of the amino acid supplement L-arginine  following a heart attack does not improve certain cardiac functions and measurements and may be associated with an increased risk of death, according to a study in the January 4 issue of JAMA.

Coffee linked to heart attack for persons with certain gene variation

Individuals who have a genetic variation associated with slower caffeine metabolism appear to have an increased risk of non-fatal heart attack associated with higher amounts of coffee intake, according to a study in the March 8 issue of JAMA.