Its iodine intake promotes the metabolism and thyroid function of our cats, regulating their levels of energy and cellular functioning. Mackerel is rich in vitamin B12, necessary for neurological function and the formation of red blood cells. Deficient in animals with inflammatory bowel disease. It can be a good source of vitamin B2 for cats, it helps in converting food into energy. Adequate intake can support a healthy energy metabolism in cats. As well as for improve skin and vision health. Low fat content, compared to sardines and tuna, so if we are looking to add oily fish in our cat's “low-fat diet”, mackerel is the option.