Final answer:
The three main issues under the nutrition assessment are malnutrition, energy homeostasis, and micronutrient deficiencies.
Step-by-step explanation:
The three main issues under the nutrition assessment are malnutrition, energy homeostasis, and micronutrient deficiencies. Malnutrition refers to a lack of proper nutrition and can manifest as undernutrition or overnutrition. Energy homeostasis is the balance between food intake, storage, and energy expenditure in the body. Micronutrient deficiencies occur when there is a lack of essential vitamins and minerals in one's diet, which can have negative effects on health.