Open your pantry, and you will likely see one of these two staples staring back at you. Canned tuna and canned chicken both promise quick protein with zero fuss. They are cheap, shelf-stable, and ready in minutes.
Still, one simple question keeps coming up. Which one is actually healthier?
The honest answer depends on what your body needs most. Both pack serious protein, yet they differ in fat type, vitamins, and even safety concerns. Let’s break it down so you can pick the right one for your goals.
Protein and Calories
A similar serving of roasted chicken breast sits at roughly 153 calories and just over 27 grams of protein.
That difference is tiny. Both give you high-quality, complete protein that helps build muscle, repair tissue, and keep you full longer. If you want lean fuel after a workout or a filling lunch that will not spike your blood sugar, either one gets the job done.
Fat content shows a slight gap. Tuna in water has around 3.4 grams of total fat per serving, while chicken breast has about 4.1 grams. Saturated fat tends to be lower in tuna, which matters if you are watching heart health.
Still, we are talking small numbers. If protein is your main goal, both foods are strong options that fit easily into a balanced diet.
Healthy Fats
Here is where canned tuna pulls ahead. Tuna is a fatty fish, and it carries omega-3 fatty acids that your body cannot make on its own. These include DHA and EPA, two fats linked to brain health, lower inflammation, and better heart function.
Studies show that canned tuna can provide close to 1 gram of combined omega-3s per 100 grams. Chicken, by contrast, contains only small amounts of omega-3, mostly in the weaker form called ALA. Your body converts only a little ALA into the more powerful DHA and EPA.
That means if you want food that supports your heart and brain in a direct way, tuna wins this round. Dietitians often point to fatty fish as a smart move for people with high triglycerides or a family history of heart disease.
Chicken still has value, but it does not deliver the same fat profile. If you rarely eat fish, adding canned tuna a few times a week can help fill that gap without much effort.
Vitamins and Minerals
Chicken may not have the omega-3 punch of tuna, but it shines in other areas. It is rich in several B vitamins that help your body turn food into energy. These include thiamin, riboflavin, pantothenic acid, and vitamin B6.
In fact, chicken can provide more than double the vitamin B6 found in canned tuna. It also contains far more pantothenic acid, which plays a key role in hormone production and metabolism. If you feel run down or want to support steady energy levels, these nutrients matter.
Potassium is another strong point for chicken. A serving of cooked chicken contains nearly three times the potassium found in canned tuna. Potassium helps regulate blood pressure and supports healthy muscle function.
Cholesterol, Mercury, and Safety
For most healthy people, dietary cholesterol is not the villain it was once thought to be. Still, if you have specific medical advice to limit cholesterol, tuna might fit better into your plan.
There is one important catch with tuna, and that is mercury. Larger species, especially albacore or white tuna, can contain higher levels of mercury. Pregnant women, young children, and people who eat tuna daily should pay attention to serving size and frequency.
