Sardine is a nutrient-rich, small, oily fish of herring family, Clupeidae. The name "sardine" came from the Mediterranean island of Sardinia, around which sardines were in abundance once. They are silvery, elongated fishes with a single short dorsal fin, no lateral line and no scales on the head. They range in length from 15 to 30 cm. They can be eaten grilled, pickled, or smoked.
Look for sardines that have fresh smell, bright eyes, shiny skin and are firm. If buying canned, choose sardines that are in olive oil rather than soybean oil. Also, check the expiration date.
Those who have kidney or gout issues should avoid consuming sardines. They have high salt content which might raise blood pressure levels, so check the content before consuming sardines.(2)
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