Foods that can boost immune system function include fruits and vegetables, nuts, seeds, whole grains, dairy (or fortified alternatives), and protein sources like meat and fish. Key nutrients for immune health are vitamins A, B6, B12, C, D, and minerals like zinc, iron, selenium, and copper, which are best obtained from a varied diet rather than supplements alone [2][4]. 

Specific immune-boosting foods include citrus fruits, broccoli, spinach, garlic, ginger, turmeric, and yogurt with live cultures [1][3][4][6]. Additionally, fatty fish are beneficial due to their omega-3 fatty acids, which help reduce inflammation [4].

What foods boost immune system function?

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