What Is a Vegan Diet? A Comprehensive Beginner’s Guide

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The vegan diet isn’t as fringe as it once was. A few decades ago, hippies and other members of the counterculture followed this lifestyle, which totally eliminates animal products in the diet. Now veganism has entered the mainstream, and it’s a diet that’s especially popular among young people. Indeed, an estimated 3 to 4 percent of Americans younger than 50 consider themselves vegan, according to a 2018 survey. [ 1 ]

Julieanna Hever, RD, a Los Angeles–based registered dietitian and the author of Plant-Based Nutrition (Idiot's Guides), says vegan diets have exploded in popularity lately. “We not only can survive without eating animals, we appear to thrive by avoiding them,” she says.