Hi Dynamicflame,   Yes, eat as much tuna as you'd like.  The more fish the better.  Granted tuna's omega 3 fatty acid content is not as high as salmon or some other fish choices, but still a great option to promote heart health.   Be sure to select tuna "in water" versus oil-packed.  Albacore tuna tends to provide more omega 3's than light tuna.   Omega 3 content is low in tuna, 6 oz. provides 0.5 - 2.5 grams.  So, if your goal is to boost omega 3 intake, there are much better options.  See Top 5 Omega 3 Sources to Lower Cholesterol.   But, if you simply like tuna and want to make sure it's okay if you have high cholesterol. . .then the answer is Yes.     All the best, Lisa Nelson, RD, LN The Heart of Health ezine