People who are allergic to one type of fish often react to other types. Similarly, people who are allergic to one type of shellfish, such as prawns, crabs, mussels or scallops, often react to other types.

Vitamin A can be toxic in high doses, even from real food and not supplements. Most cases of Vitamin A toxicity are from supplements, not real food. But that doesn’t mean you need to eat cans of cod liver all day, every day. Sometimes I put a cod liver pate or your salad (pate is basically your recipe in creamed in a blender) on cucumber or radish slices, but I’m mostly off plants. If I’m in a naughty mood I slather it on gluten free bread from Etalia Foods.com. ReplyAviram M, Brox J, Nordoy A. Effects of postprandial plasma and chylomicrons on endothelial cells. Differences between dietary cream and cod liver oil. Acta Med Scand 1986;219:341-8.. View abstract.

Brox JH, Killie JE, Gunnes S, Nordoy A. The effect of cod liver oil and corn oil on platelets and vessel wall in man. Thromb Haemost 1981;46:604-11. View abstract.Vitamin A, found in cod liver oil, is essential for maintaining healthy eyes, skin, and hair as well as for a strong immune system. It's high in anti-inflammatory omega-3 fatty acids and helps prevent blood clots.