Caring for the environment is the latest and most trendy reason to go vegetarian (or...*gasp*...vegan!), but apparently if you're making up for meat by eating a lot of fake meat, you might be hurting Mother Earth more than if you'd stuck to chicken and fish:
In general, Eshel says, it's true that raw veggies are an excellent nutritional bargain: For every 100 calories of energy put into producing conventional beef, from farm to supermarket shelf, you get only six calories back to eat. Compare that with apples, which yield 110 calories, or raw soy: an amazing 415. In terms of greenhouse gases, switching from a diet that includes red meat to a plants-only one is roughly equivalent to trading in your SUV for a Camry.
But a girl can only eat so much roasted kale before she starts craving protein: tofu, veggie burgers, and the (okay, creepy) occasional piece of fakin' bacon. But coaxing soy into a red-and-white rectangular strip takes work—which is why Eshel believes most veggie burgers are the caloric equivalent of "shooting yourself in the foot." A 2009 study by the Swedish Institute for Food and Biotechnology found that while producing a plate of peas requires a fraction of the energy needed to produce the same number of calories of pork, the energy costs of a pea-burger and a pork chop are about equal.
That's not the only issue with fake meat. Consider the process that keeps your veggie burgers low in fat: The cheapest way to remove fatty soybean oil is with hexane, an EPA-registered air pollutant and suspected neurotoxin. A 2009 study by the Cornucopia Institute, a sustainable-farming nonprofit, found that Boca, Morningstar Farms, and Gardenburger (among others) market products made with hexane. The finding was enough to turn Cornucopia researcher Charlotte Vallaeys off of fake meat. "I can't think of a single meat-alternative product where I could explain how every ingredient is made," she says. "With a grass-fed burger, well, there's one ingredient. And with grass-fed burgers I actually might be doing something good for the environment."