I guess healthy is what your perception of healthy means.  I think there is nothing wrong with a classic tuna sandwich made with real mayonnaise, celery, salt & pepper on good bread.  Adding lettuce and tomato make it more nutritious.

I am a firm believer in eating real food.  I never buy “light” or “fat-free” versions of foods that should have fat in them.  We actually need fat— even saturated fats, in order to absorb certain nutrients.  It’s just the old adage of everything in moderation.  And that goes for tuna fish, especially canned.  It has a high mercury content versus other fish and tuna is being depleted from the oceans. 

Now if you’re looking to expand your tastes for something different… How about tuna nicoise salad (tuna, eggs, haricot verte, good olives— nicoise, kalamata, potatoes, greens, anchovies, mustard vinaigrette) or a grilled tuna club with wasabi mayo or my rice salad with chopped greens?

Thank you so much and good luck!