nerve disease caused by nutrient deficiencies
A poor diet that lacks essential nutrients generally causes nutritional deficiencies. The body stores nutrients. Therefore, a deficiency is usually detected after a prolonged lack of a nutrient. A number of diseases and conditionsâincluding colon cancer and gastrointestinal conditionsâcan lead to an iron deficiency.he symptoms of a nutritional deficiency depend on which nutrient the body lacks. However deficiencies can cause general symptoms. These include: 1  Pallor (pale skin). 2  fatigue. 3  weakness. 4  trouble breathing. 5  unusual food cravings. 6  hair loss. 7  periods of lightheadedness.