As a new year and new decade offer opportunities to take stock of where we've come and to anticipate the changes ahead, the International Food Information Council (IFIC) Foundation is forecasting five broad trends for food and nutrition in 2020.

Researchers investigated whether tryptophan -- an amino acid found in red meat, dairy products, nuts, seeds, turkey, tuna and other foods -- influences individuals' willingness to trust others.

The results were clear: trust is not only a huge factor in the health of the relationships people have with each other, but also plays a significant role in food choices.