Intake of aquatic and terrestrial animal source foods among women of reproductive age in northern Tanzania

Aquatic foods and terrestrial animal source foods (TASF) provide crucial nutrients that build and maintain muscle mass and function. These foods are particularly rich in essential micronutrients, including iron, zinc, vitamin A (as retinol), vitamin D, and vitamin B12, as well as essential fatty acids. Notably, vitamin B12 is found almost exclusively in TASF and some aquatic foods, underscoring their importance in diets. Compared with plant-sourced protein foods, aquatic foods and TASF generally provide micronutrients in more bioavailable forms, which is critical for populations at risk of micronutrient deficiencies. However, aquatic foods and TASF have a higher environmental footprint than plant-sourced protein foods, requiring diversified strategies to meet global dietary needs under increasing environmental pressures.