Meat protein and heart failure in women over 50

According to preliminary research presented at the American Heart Association's Scientific Sessions 2016, women over the age of 50 who follow a high protein diet could be at risk for heart failure, especially if much of their protein comes from meat.

The research presented involved 103,878 women between the ages of 50 and 79 years.  The rate of heart failure for women with a higher total dietary protein intake was significantly higher compared to the women who ate less protein daily or got more of their protein from plant based sources. 

The team used special biomarker data to accurately calibrate daily protein intake doubly labelled water and urinary nitrogen  (doubly labelled water uses non-radioactive tracers to evaluate a person's metabolic energy while urinary nitrogen is used to determine actual amounts of dietary protein.)