Question: Why do I get hungry?
Answer: Being hungry means you have an appetite. Appetite is the desire to eat food and is felt as hunger.
A part of your brain called the hypothalamus sends messages that you are hungry or thirsty. Food and water are necessary for life. Food and water are the nutrients that your body needs for energy, repairs and growth. Different parts of your body have sensors that send messages to your hypothalamus informing it that specific nutrients are needed. So you get hungry or thirsty. But there are other things that send the hypothalamus messages, such as the wonderful aroma of cakes and cookies baking. Being diabetic, I am not allowed to eat these sugary delights, so I know just how appetizing these smells are.
How a food smells and its appearance definitely affect your appetite (desire to eat). Color is a big part of the appearance of food. Some colors, known as positive triggers, make you feel hungry, while other colors, known as negatives, repress hunger. Red, orange, yellow, and green are known as positive triggers for hunger, while blue is a negative trigger, or appetite suppressant.
You can find more information about food in Janice VanCleave’s Food and Nutrition for Every Kid