Sardines have high levels of Omega-3 fatty acid. These are critical for the brain and eye development of the baby. Omega-3 is not created by the human body. Hence, you need to supplement yourself with the right foods to get your regular intake of this fatty acid.
The two most beneficial Omega-3s are EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid). EPA supports the heart, immune system, and inflammatory response, while DHA supports the brain, eyes, and central nervous system. Hence, you should include sardine in your pregnancy diet for good neonatal nutrition.