
12. Mackerel
Mackerel is an oily fish that’s not as popular as salmon or tuna but still carries brain-protecting benefits that people shouldn’t overlook. Like its cousin, sardines, mackerel are packed with omega-3 fatty acids, which help feed the brain and increase blood flow to the areas that control memory and learning. Omega-3s can help prevent cognitive decline. Experts also believe they help with symptoms of depression.
Mackerel is also a good source of iodine, which improves mental clarity. And you don’t have to eat fish with every meal; just 8 ounces of fatty fish like mackerel every week can have long-term positive effects on your brain.