2. Farmed fish
Fish has a reputation for being brain food, but not all fish is created equal. In recent decades, the global demand for fish has led to the creation of fish farms to produce more of it for human consumption. It sounds good in theory, but in practice, it’s a bit of a disaster. Farmed fish are raised in horrible conditions: they’re fed an odd diet of pellets that doesn’t come close to resembling what they’re supposed to eat, and to counter the diseases that crop up as a result of overcrowding, they’re given antibiotics as well. They also have lower levels of heart healthy omega-3 fatty acids and higher levels of inflammation-causing omega-6s. Farmed fish also have higher levels of cancer-causing substances like PCBs and dioxins. The bottom line? Avoid farmed fish and go for wild caught instead.