I’ve been a vegetarian my entire life. No one in my family or anyone I knew was vegetarian; it was something I came to on my own. When I was a child, people would often ask me why I didn’t eat meat, as if there was some moment or reason that precipitated it, but I never had an answer. Today I can name a whole host of reasons to be a vegetarian—ethical, health-related, and environmental—but I wasn’t aware of those benefits of vegetarianism when I was four years old. Yet as far back as I can remember, I’ve had an instinctual disgust toward meat. It was as though I was born a vegetarian. But is that possible? Are certain people natural vegetarians?