1. Undernutrition: This occurs when a person does not consume enough nutrients to meet their body's needs. This can result in deficiencies in essential nutrients such as protein, vitamins, and minerals, leading to symptoms such as weight loss, fatigue, weakened immune system, and stunted growth in children.
2. Overnutrition: This occurs when a person consumes an excess of nutrients, particularly calories, leading to obesity and related health problems such as heart disease, diabetes, and high blood pressure. Overnutrition is often associated with a diet high in processed foods, sugary drinks, and unhealthy fats.
3. Micronutrient deficiency: This occurs when a person lacks specific vitamins and minerals in their diet, leading to deficiencies that can cause a range of health problems. Common micronutrient deficiencies include iron deficiency anemia, vitamin A deficiency, and iodine deficiency disorders. These deficiencies can result from poor dietary choices, limited access to nutritious foods, or underlying health conditions.