Why did the world’s top restaurant chain eat its own chicken?

New research suggests that McDonald’s and the fast food industry may have intentionally added chickens to their chicken dishes to increase their meat content, which has been known to cause health issues.

Researchers say the research may provide some insight into how to reduce the consumption of meat and poultry.

They also say it is important to consider how the chickens were treated and whether they may have contributed to the health problems.

The new research was conducted by researchers at the University of Texas Health Science Center at San Antonio, with funding from the U.S. Department of Agriculture.

The research was published in the Proceedings of the National Academy of Sciences on Tuesday.

McDonald’s is the largest restaurant chain in the world and has more than 2,000 restaurants across the U, Canada and Mexico.

The company is a division of U.K.-based McDonald’s Group Plc.