We're told that if we care about our health-or our planet-eliminating red meat from our diets is crucial. That beef is bad for us and cattle farming is horrible for the environment. But science says otherwise.

Beef is framed as the most environmentally destructive and least healthy of meats. We're often told that the only solution is to reduce or quit red meat entirely. But despite what anti-meat groups, vegan celebrities, and some health experts say, plant-based agriculture is far from a perfect solution.

In Sacred Cow, registered dietitian Diana...