The answer is YES and YES.

Haylie has formulated the diet to be vegetarian and vegan friendly - it will just take some small adjustments.

Be sure to check out Haylie's extra recipes that include both vegetarian and vegan breakfasts, lunch, dinner and snacks!

https://hayliepomroy.com/product/free-vegetarian-vegan-recipes-for-the-fast-metabolism-diet/

-Vegetarian:

It is particularly easy to adapt The Fast Metabolism Diet to your needs if you are willing to eat eggs. It’s even easier for pescetarians, who eat fish. For Phases One and Three, substitute 1/2-cup cooked, Phase-specific legumes or fish for meat ingredients. For Phase Two, you may either eat eggs and fish for your protein snacks and meals, or follow the Phase Two advice for vegans.

-Vegan:

For Phases One and Three, substitute 1/2-cup cooked, Phase-specific legumes for meat. During Phase Two (and only during Phase Two) you may break the no-soy rule in three ways to up your protein intake: Tofu, soy tempeh, and edamame, as long as they are organic and non-GMO.