Fish
Fish is Top Notch for so Many Healthy Reasons. When you’re Looking for a Fish to Improve Immune Function Focus on Oily Fish Such as Salmon, Mackerel, Sardines, and Tuna. Be Aware that too Much of a Big Fish isn’t a Good thing Since there can be Substantial Amounts of Mercury. But Fish in Moderation is a Fantastic Source of Omega 3 Fatty Acids and Vitamin D.