Can An Upset Stomach Handle Oily Fish Mackerel?

Can An Upset Stomach Handle Oily Fish Mackerel? Health benefits of oily fish. Oily fish is rich in omega-3 polyunsaturated fatty acids, which have been shown to reduce inflammation and potentially lower the risk of heart disease, cancer, and arthritis. Both white and oily fish are good sources of lean protein. Can oily fish make