Most of the salmon purchased and made into burgers comes from farms, and they're bred specifically for human consumption. Wild salmon has fewer calories, less fat, and less saturated fat compared to farmed salmon. However, farmed salmon is higher in minerals, including zinc, iron, and potassium. Both wild and farmed salmon contain small amounts of contaminants, but wild salmon usually have lower levels. Wild salmon also tend to be more expensive but is overall the healthier and less risky option.