
18. Tuna
Tuna is one of the most popular fish around. Whether canned, served in a steak, or eaten on sushi, tuna packs a punch for protein. However, protein isn’t all tuna has going for it; it’s also a great source of niacin and omega-3 fatty acids.
Niacin is a critical component of brain health. Ensuring you have enough niacin in your diet can help delay the premature aging of your brain cells. It also helps reduce cognitive issues and the risk of Alzheimer’s. In fact, niacin is so essential that a lack of it can actually increase your risk of dementia. When you pair that with one of the brain’s favorites, omega-3 fatty acids, it’s easy to see how this popular fish can be a staple in a brain-healthy diet.