The lingo can get complicated. A strict vegetarian doesn't eat any meat or animal-derived products, though some make exceptions for fish, dairy, or eggs. A guide:
Pescatarians eat fish
Ovo-Vegetarians eat eggs
Lacto-Vegetarians eat dairy products
Lacto-Pesco-Ovo-Vegetarians eat all three
Vegans eat no animals or animal products, including milk and honey
Don't Be A 'Starchatarian'
When you go vegetarian, it's a common misstep to replace meat with starch. However, such a diet is no healthier than a meat-based diet and may even be less so. Instead, fill the empty spaces on your plate with plant-based protein--nuts, seeds, soy, and legumes contain plenty. In addition, aim to get enough of the following nutrients, which can fall short:
Iron For nonmeat sources, turn to egg yolks, beans, and cooked spinach.
Calcium Nondairy eaters should opt for leafy greens such as kale.
Omega-3s If fish isn't on your menu, be sure to consume walnuts and flaxseed, and consider a supplement.
Vitamin B12 This nutrient occurs naturally only in animal products, so you must either supplement or eat fortified foods (like cereals or soy milk).
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