Sardines or Tuna? Discover Which One Nourishes You More with Omega-3 and Protein
Both sardines and tuna are rich in protein and omega-3 fatty acids, but sardines lead in omega-3 content while tuna provides more protein per serving.
When it comes to nutritious fish, sardines and tuna are popular choices. Both are excellent sources of protein and omega-3 fatty acids, essential for heart and brain health. But which one offers more benefits in each category?
Omega-3: Sardines Take the Lead
Tuna contains about 128 mg of omega-3 fatty acids per 3.5 ounces, while sardines provide 982 mg for the same weight. This makes sardines a superior option for supporting heart and brain health, improving blood lipid levels, and reducing risks of arrhythmias, inflammation, and neurological disorders.
Protein: Tuna on Top
Tuna surpasses sardines by about 4.5 grams of protein per serving, making it ideal for muscle building, tissue repair, immune support, and maintaining muscle mass.
Mercury: Safety Tips
Sardines and light canned tuna are among the best low-mercury options. White tuna and yellowfin tuna often have higher mercury levels, which should be consumed in moderation to prevent neurological, kidney, vision, and muscular issues.
Why Do Some Fish Contain Mercury?
Mercury contamination in fish mainly comes from household and industrial waste in water. Bacteria convert it to methylmercury, which accumulates in plankton and small marine organisms, then moves up the food chain to fish like sardines and tuna, eventually entering our diet.
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