This article was originally published on mentalfloss.com as Why the McDonald’s Logo Uses the Colors Yellow and Red.

According to health experts, the color of an apple can determine its nutritional benefits, with different varieties addressing specific health needs.

RELATED: What Company Logos Looked Like When They Were Young Why do so many fast food chains use red? Aside from just grabbing our attention, the color red stimulates appetite and hunger.

“In terms of color, apples can range from green (like granny smith) to yellow (like golden delicious), to red (like empire and gala), and often a mix of colors (like honeycrisp),” Kelle… ...