date:Aug 05, 2016
s since the 1980s. In addition to completing overall health questionnaires every two years, participants provide information on their dietary intake -- specifically how often they consumed portions of particular types of food during the preceding year -- every four years.
The researchers analyzed more than 30 years of data for NHS participants and 26 years of data for HPFS participants, totaling more than 3.5 million person-years. During those time periods more than 36,000 deaths were documente