As read in the newspaper, and also seen on the web, Yum brands is reducing the number of food dyes like Food, Drug & Cosmetic Blue No. 1 Dye. In honor of the news, I'll make the following text the same color.

This is known to people who abide by the Fiengold Diet as a confounder in the quest of determining if one causes ADHD/ADD.

When searching for one peer reviewed article on the subject the website wouldn't load. The following case report points out that in the severely ill, they absorbed way too much of it, and lo and behold like many things in life, when you consume too much of anything it makes one *really* sick.

In fairness, if one has the following diseases: Gram-negative sepsis, cadaveric renal transplant, symptomatic atherosclerotic coronary artery disease, acute right heart failure, and tricuspid regurgitation, one likely wouldn't be advised under a doctor's care to go eat at McDonalds, Burger King, KFC, Taco Bell, Sonic, Wendy's or any fast food joint. Doubtful, if even Chipotle would be acceptable.

http://journal.publications.chestnet.org/data/Journals/CHEST/22005/793.pdf
Toxicity of Food Drug and Cosmetic Blue No. 1 Dye
http://uproxx.com/webculture/2015/05/taco-bell-ditching-artificial-flavors/