The most widespread nutritional deficiency in both developing and developed countries is iron deficiency.

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Iron deficiency is indeed the most widespread nutritional deficiency worldwide, affecting both developed and developing countries. According to the World Health Organization, an estimated 1.62 billion people, or almost a quarter of the global population, suffer from anemia caused by iron deficiency. Iron is a critical mineral for the production of hemoglobin, which carries oxygen in the blood, and its deficiency can lead to fatigue, weakened immune system, and cognitive impairment, among other health problems. Iron deficiency is particularly prevalent among infants, children, women of reproductive age, and people with poor diets or certain medical conditions.

The Most Widespread Nutritional Deficiency in Both Developing and Developed