That depends on what country you're asking about.
To answer the question: magnesium, vitamin E, vitamin C, Calcium, fiber, vitamin A, potassium, iodine, vitamin D, and vitamin B12.
Folic acid deficiency is one of the most common of all vitamin deficiencies.
Iron
Iron
Iron
the most common cause of thiamine deficiency is alcoholism. Other conditions which cause thiamine deficiency occur quite rarely, but can be seen in patients undergoing dialysis
Calcium
Iron deficiency is the most common nutrient deficiency worldwide, affecting about a quarter of the global population. Iron is essential for producing hemoglobin, which carries oxygen in red blood cells. Deficiency can lead to anemia and other health complications.
Iron-deficiency Anemia
The most common cause of anemia in adults is iron deficiency.
Iron deficiency anemia
selective immunoglobulin A deficiency disease.
iron deficiency anemia is most common in women occur because of menstrual blood loss
aids(acquired immuno deficiency syndrom)
Iron
fatigue, pallor and dizziness are the most common
There are many Vitamin D deficiency symptoms and here are the most common ones:ricketsosteoporosisobesityfatiguechronic backachecancersDiabetesHeart diseaseshyperparathyroidismdepression