Where does pegan come from?

Pegan, both word and diet, was created in 2014 by Dr. Mark Hyman. It is a blend of paleo and vegan diets, hence the name. Simply put, the pegan diet allows lean meats, oily fish, and eggs (generally not permitted in veganism) as well as some grains and beans (avoided by paleo eaters).
Dr. Hyman’s pegan diet gained national attention after the publication of his book Food: the Heck Should We Eat? in February 2018. The book details his pegan diet, which was analyzed by food blogs and bigger publications like USA Today. Dr. Hyman even appeared on The Today Show in July 2018 to explain the bullet points of his pegan diet.
The pegan diet incorporates pieces of the paleo and vegan diets:
— USA TODAY Life (@usatodaylife)
According to foodies and nutritionists, the diet can be healthier than either the paleo and vegan diet on their own. It is even referred to as “the healthiest diet” by some. That said, the diet is still restrictive and inconvenient, time-consuming, and it can be expensive to regularly cook meals.
Examples of pegan

Who uses pegan?
Although it has existed since 2014, the pegan diet trended in 2018–19, boosted by the likes of social media sites like Pinterest, as well as popular shows such as The Today Show and Dr. Oz.
Pegan diet: It’s trendy and all about the organic veggies
— Q World News (@QWorldNews1)
My take on pegan diet
— Archana Potdar (@APotdar)
The diet is sometimes hailed by nutritionists and other health-conscious individuals as the so-called “world’s healthiest diet.”
Part paleo, part vegan, the pegan diet is taking root with people on the hunt for healthy habits in 2019!
— Good Morning America (@GMA)
peganism continues to spread, however, many are calling it out as just another bougie, elitist lifestyle trend.
🙌🏼 Yes, it's elitist! Pegan Diet also comes with too many rules & restrictions. Only grass fed beef, antibiotic-free, organic, etc… It would take too much time to make eating decisions! Most people would have issues being normal around food…
— Michelle Jaelin (@NutritionArtist)
Note
This is not meant to be a formal definition of pegan like most terms we define on Dictionary.com, but is rather an informal word summary that hopefully touches upon the key aspects of the meaning and usage of pegan that will help our users expand their word mastery.