👉 Insufficiencies are a type of deficiency in which a person does not have enough of an essential nutrient or mineral to meet their body's needs. Examples of deficiencies include: 1. Iron deficiency, which can cause fatigue, weakness, and poor vision. 2. Vitamin D deficiency, which is caused by exposure to the sun and can lead to bone fractures and joint pain. 3. Magnesium deficiency, which can cause muscle cramps, diarrhea, and headaches. 4. Zinc deficiency, which can