If the body does not receive an adequate supply of food, it enters a state of undernutrition or starvation. Insufficient caloric intake deprives cells of energy, leading to weight loss, fatigue, and weakened immune function. Essential nutrient deficiencies may cause various health problems, affecting organs and systems. Prolonged malnutrition can lead to severe conditions like kwashiorkor or marasmus, characterized by muscle wasting and organ dysfunction. The body may prioritize vital functions, sacrificing non-essential processes. Ultimately, a lack of adequate food compromises overall health, impairs physical and mental function, and increases vulnerability to diseases, potentially leading to life-threatening consequences.