Many people struggle with iron deficiency. If you are iron deficient, and you have hair loss, you may not connect the two to each other. Often, there are so many other causes for hair shedding that may not be related to nutrient deficiencies that this seems to be something overlooked by many. Yet, a lack of nutrients is a major reason for many people to lose their hair. Iron is one of those important nutrients your body needs if it is to operate properly and encourage natural, healthy hair growth.