The most prevalent nutritional deficiency globally can be determined by analyzing a multitude of research and survey data gathered over the years.
To begin with, we need to know that nutritional deficiencies occur when the body doesn't get enough of a specific nutrient. These deficiencies can lead to several health problems including digestive issues, skin disorders, stunted growth in children, and even dementia.
After perusing through numerous global health reports, it becomes evident that there are many nutrients that people for various reasons may lack. These nutrients include, but are not limited to, Vitamins A, B12, D, E and K, Calcium, Magnesium, and Iron.
However, among these, the deficiency that crops up the most in data worldwide is iron.
Iron is a crucial nutrient necessary for producing hemoglobin, a protein in red blood cells that enables them to carry oxygen around the body. If your body doesn't have enough iron, it can't produce enough healthy oxygen-carrying red blood cells, leading to iron deficiency anemia.
Therefore, the most common nutritional deficiency worldwide is iron deficiency.