40 Foods To Avoid After 40

Tuna Fish

You might be surprised to find tuna fish on this list as it is considered to be a healthy food and a great source of protein, but those reasons aren’t why it has made this list. In fact, tuna is very high in mercury and when you consume too much of it, it can lead to all sorts of problems including cognitive decline.

Considering you need to upkeep your cognitive abilities after 40, eating too much tuna can hinder things. While skipjack tuna is ok to eat a few times a week, try to avoid albacore, yellowfin and bigeye tuna.