Final answer:
Malnutrition refers to a lack of proper nutrition and can occur due to an inadequate supply of essential nutrients in the diet. Undernutrition, micronutrient deficiencies, and unbalanced nutrition are different forms of malnutrition that can negatively impact health.
Step-by-step explanation:
Malnutrition refers to a lack of proper nutrition, which can occur due to an inadequate supply of essential nutrients in the diet. Undernutrition is a type of malnutrition where there is a lack of nutrients and insufficient energy supply. This can result in growth deficits, wasting, stunting, and life-threatening syndromes like kwashiorkor and marasmus. Micronutrient deficiencies and unbalanced nutrition are also forms of malnutrition that can lead to various health problems. Overall, an inadequate supply of essential nutrients in the diet can have significant negative effects on a person's health.