A new study on eating patterns found that veganism isn't as good for the environment as its proponents would have you think.

The study reviewed the following different eating styles using computer simulations: "the vegan diet, two vegetarian diets (one that includes dairy, the other dairy and eggs), four omnivorous diets (with varying degrees of vegetarian influence), one low in fats and sugars, and one akin to the modern American dietary pattern."

What the simulations concluded is that "When applied to an entire global population, the vegan diet wastes available land that could otherwise feed more people. That’s because we use different kinds of land to produce different types of food, and not all diets exploit these land types equally."

The five diets that contained the most meat used all available crop and animal grazing land. The five diets using the least amount of meat—or none at all—varied in land use. But the vegan diet stood out because it was the only diet that used no perennial cropland at all, and, as a result, would waste the chance to produce a lot of food.

The dairy friendly vegetarian diet, egg and dairy friendly vegetarian diet and two omnivore diets fed more people than a vegan diet.

So much for sustainability. Save the earth by firing up your grill this weekend.