NEW YORK, NY - MARCH 02: Ice cream on display as Jimmy Fallon and Ben & Jerry’s co-founders announce "Late Night Snack”, the newest Fair Trade flavor at Studio 6B Rockefeller Center on March 2, 2011 in New York, United States. (Photo by Mike Coppola/Getty Images for Ben & Jerry's)

July 21st was National Junk Food Day. And what better way to celebrate than by talking about our favorite delicious junk foods?

Even though junk food is known to obviously be very low in nutritional value, Healthline says you should be able to eat your favorite treats every once in a while.

As we all know, there are a lot of delicious junk foods on the market, but what came out when? And how old are some of our favorites things to munch on? The answers might surprise you…

In the 1940s, the world was blessed with Mountain Dew, M&M’s, and Cheetos. Can you believe these snacks are close to 80 years old? The 1950s brought the world Hot Tamales candy, Eggo Waffles, Cheez Whiz, and Trix cereal.

In the 1960s, a Frito Lays restaurant at Disneyland came up with Doritos. Also at this time, Pop-Tarts, Sprite, Starburst, and Little Debbie’s Oatmeal Creme Pies burst on the scene.

The 70s led to the introduction of two very important classic snacks. First, Famous Amos Chocolate Chip Cookies, and second, Ben and Jerry’s Ice Cream. What would we have done without them? And Bagel Bites, Sour Patch Kids, microwave popcorn, and Diet Coke arrived in the 1980s.

The 1990s brought us Gushers, Dunkaroos, and Hershey’s famous Cookies n’ Creme bar. Is your go-to junk food on this list? What decade does it come from?

Source: Fox29

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