Reduces sodium: Canned tuna is often packed in brine or oil, which can be high in sodium. Rinsing can remove some of the sodium, making the tuna a healthier choice for people with high blood pressure or heart disease.
Improves texture: Some people find that rinsing canned tuna improves its texture, making it less oily or salty.
Removes preservatives: Canned tuna may contain small amounts of preservatives, which some people prefer to avoid. Rinsing can remove some of these preservatives.
Loss of nutrients: Rinsing can remove some of the water-soluble vitamins and minerals in canned tuna, such as vitamin B12 and selenium.
Loss of flavor: Rinsing can remove some of the tuna's natural flavor.
Increased risk of contamination: If you don't rinse the can properly, there is a small risk of contaminating the tuna with bacteria from the can.
If you are concerned about sodium intake, prefer a less oily texture, or want to avoid preservatives, rinsing may be a good option for you.
You can also choose to buy canned tuna that is packed in water instead of brine or oil. This will reduce the need for rinsing and still provide you with a healthy source of protein.