Final answer:
A compelling desire for a specific food is known as a craving, which differs from general hunger. It is influenced by physiological, emotional, and societal factors. Obesity, hormones, and exercise are among the aspects that affect food desires and consumption.
Step-by-step explanation:
A compelling desire for a specific food is often referred to as a craving. It's a powerful motivation that can be affected by many factors including hormones, sensory stimuli such as the sight and smell of food, and even emotional states. Hunger is a more general need to eat that occurs when the stomach is empty and the body needs more energy. It is a complex interplay of physiological signals involving the gastrointestinal tract, hormones, and the brain, particularly the hypothalamus which helps regulate hunger and satiety. These signals can prompt us to seek food and eat, thereby ensuring that our nutritional and energy needs are met.
An obese adult is defined as someone with a Body Mass Index (BMI) of 30 or higher. Obesity can be associated with an increased desire for food, particularly high-energy foods that are rich in fats and sugars. Societal factors such as advertising, cultural norms, and availability of food can also significantly influence our food choices and desires. Additionally, exercise can have an impact on appetite, acting both as a stimulant and suppressant, which can influence the urge to consume specific types of food.