Sardines are small, oily fish that can be eaten whole. This includes bones, skin, organs, brains and everything.
Given that the organs are usually the most nutritious parts of an animal, it is not surprising to see that whole sardines are incredibly nutritious.
They contain a little bit of almost every nutrient that the body needs and are pretty close to being perfect from a nutritional standpoint.
Like other fatty fish, they’re also very high in heart-healthy Omega-3s.