Starvation is a severe deficiency in caloric energy, nutrient, and vitamin intake, leading to significant health issues. It occurs when individuals do not consume enough food to meet their body's energy needs, often due to factors like poverty, conflict, or natural disasters. The body begins to use its fat and muscle stores for energy, which can result in weight loss, weakness, and eventually organ failure if not addressed. The effects of starvation can be devastating, impacting physical and mental health. Symptoms may include extreme fatigue, irritability, and a weakened immune system, making individuals more susceptible to diseases. Organizations like the World Food Programme work to combat starvation by providing food assistance and promoting sustainable solutions to hunger.